Free browser-based utilities

Free Online Tools for Developers and Everyday Tasks

Format JSON and YAML, convert text and PDFs, create or scan QR codes, check websites and DNS, run calculators, and download supported public media.

56 free online tools available•No account required
0 Free Online Tools

Developer, Text, PDF, Web, QR, Calculators & Media

Clear Privacy Boundaries

Local processing is identified on tools that support it

Focused Workflows

Open a tool and get directly to the task

0 Languages

Available in English, French and Spanish

Developer and everyday utilities

Explore all free online tools

Search the complete collection or filter by developer, text, PDF, QR, calculator, web and network, or media tools.

Available now

Instagram Reel Downloader

Paste a public Reel link, preview the video, and download the available MP4 with its original audio when provided.

Open tool
Available now

Instagram Photo Downloader

Paste a public Instagram post link, preview its images, and save the available photos.

Open tool
Available now

Pinterest Video Downloader

Preview a public video Pin and save the best available MP4.

Open tool
Available now

Pinterest Image Downloader

Download Pinterest images by pasting a public image Pin link, checking the preview, and saving the best available photo.

Open tool
Available now

Reddit Video Downloader With Audio

Preview a public Reddit video, choose an available resolution, and save it as one MP4 with sound when Reddit provides an audio track.

Open tool
Available now

Website & Domain Age Checker

Check a domain’s registration age and estimate a website’s age from public archive history.

Check website age
Available now

DNS Lookup Tool

Inspect the live DNS records published for a domain, or run a reverse PTR lookup for an IP address.

Look up DNS
Available now

MAC Address Lookup

Enter a device MAC address to find its registered vendor, OUI assignment and address type.

Look up MAC
Available now

Online Port Checker

Test common or custom TCP ports on a public domain or IP address and see clear connection results.

Scan Ports
Available now

Email Domain Configuration Checker

Check whether a domain publishes the DNS records needed to receive email and authenticate outgoing messages.

Check email configuration
Available now

IPv4 & IPv6 Subnet Calculator

Calculate IPv4 or IPv6 network ranges and prefixes, or generate a custom IPv4 address list.

Calculate a subnet
Available now

URL Redirect Checker

Check a URL redirect chain, HTTP status codes, final destination, redirect types, and response times with a secure server-side redirect checker.

Check Redirects
Available now

Website Technology Checker

Find out what technology a website uses. Detect its CMS, framework, hosting, CDN, analytics, web server and JavaScript libraries free online.

Check technologies
Available now

Website Status Checker

Check whether a website is up or down right now. Test its live HTTP status, response time, final URL and redirects with a free website status checker.

Check website
Available now

Open Graph & Social Media Card Previewer

Simulate pixel-perfect link preview cards across Twitter/X, LinkedIn, Facebook, Discord, Slack, WhatsApp, and Google Search. Inspect any live URL or design meta tags with 1-click code export.

Inspect Live URL
Available now

Device & Hardware Information Checker

Instantly view complete specifications for your device, screen display, operating system, GPU graphics card, processor cores, and browser environment right in your browser.

Check website age
Available now

Exact Age Calculator

Calculate age from a date of birth in years, months, and days, check age on any date, and see the next birthday countdown.

Calculate age
Available now

Data Life Calculator

Enter your remaining data to estimate how long it could last for your everyday online activities.

Estimate data life
Available now

Work Hours Calculator

Add each clock-in and clock-out session to see your completed hours, remaining target time, and projected finish.

Calculate hours
Available now

API Cost Calculator

Estimate monthly request-processing and bandwidth costs for a REST API with your own provider rates and free-tier allowances.

Calculate age
Available now

Website Bandwidth Calculator

Estimate how much hosting bandwidth your website may use each month from traffic, page views, and average page weight.

Calculate age
Available now

Database Storage Growth Calculator

Estimate how much primary and backup storage your database will need over time.

Calculate age
Available now

AI Token Cost Calculator

Estimate the cost of an AI model request or workload using separate input and output token prices.

Calculate age
Available now

Video Upload Time Calculator

Estimate how long a video or large file will take to upload using its file size and your measured upload speed.

Calculate age
Available now

ISP Bandwidth Calculator

Estimate required upstream capacity from subscribers, average plan speed, oversubscription, and optional headroom.

Calculate age
Available now

WiFi Access Point Capacity Calculator

Estimate how many active devices your WiFi network can support and how many access points you need.

Calculate age
Available now

QR Code Security Scanner

Scan or upload a QR code to reveal what it contains and check links for clear phishing and security warning signs before opening.

Check a QR code
Available now

PDF QR Scanner

Upload a PDF to find QR codes on its pages and view the encoded links, contact details, Wi-Fi settings, or text.

Open scanner
Available now

Multi-QR Data Splitter

Split long text or a small file into numbered QR codes, then scan the pieces in any order to reconstruct the original.

Open scanner
Available now

QR Code Designer & Generator

Create custom QR codes for links, Wi-Fi, vCards and more with colors, styles, frames, logos, and PNG or SVG export.

Open scanner
Available now

Text to PDF Converter

Convert plain text, TXT notes, memos, or code snippets into clean, paginated PDF documents with custom typography, running headers, and zero watermark—100% private in your browser.

Open tool
Available now

PDF Text Extractor

Extract readable plain text, paragraphs, and notes from PDF files directly in your web browser with 100% privacy and zero server uploads.

Open tool
Available now

Free Online Case Converter & Word Counter

Transform text casing between 15 formats instantly, clean spacing, and inspect real-time word counts, reading duration, and keyword density—all 100% in your browser.

Open tool
Available now

Markdown to Text & HTML Converter

Transform formatted Markdown documents into clean plain text or HTML with immediate live rendering. Extract unformatted text for emails and articles or generate valid HTML code client-side.

Open tool
Available now

Lorem Ipsum & Dummy Content Generator

Generate realistic placeholder text, developer terminology, business copy, and mock user profile schemas in Plain Text, HTML, Markdown, or JSON.

Open tool
Available now

HTML Entity Encoder & Decoder

Encode special characters into standard HTML entities or decode escaped entities back to readable text. Supports named, decimal, and hexadecimal formats with a live character cheat sheet and safe preview.

Open tool
Available now

Line Sorter, Deduplicator & Text Cleaner

Clean, alphabetize, and deduplicate lists in real-time. Sort alphabetically, naturally, or by length; remove duplicates; strip empty lines; and bulk-add prefixes, quotes, and delimiters.

Open tool
Available now

Cron Expression Generator & Explainer

Build a reliable cron schedule field by field, understand it in plain English, and preview the next five execution times before you deploy it.

Launch tool
Available now

JSON to TypeScript & Schema Converter

Turn JSON payloads and API responses into clean TypeScript interfaces, Zod validators, or TypeBox schemas with nested types and inferred optional fields.

Launch tool
Available now

UUID / GUID v4 & v7 Bulk Generator

Generate cryptographically secure UUID v4 and RFC 9562 time-sortable UUID v7 identifiers in bulk up to 10,000, with instant timestamp extraction, custom case, hyphens, and multi-language array formatting.

Launch tool
Available now

JWT Debugger & Token Inspector

Decode, verify, and inspect JSON Web Tokens (JWT) in real time. Validate standard claims, check token expiration, and verify signatures with 100% client-side privacy.

Launch tool
Available now

Base64 & Hex Encoder / Decoder

Encode and decode plain text, binary files, images, and data buffers into Base64, Base64URL, Hex, and binary bits in real-time. 100% client-side privacy with custom formatting and file exports.

Launch tool
Available now

RegEx Tester & Debugger

Test, debug, and optimize regular expressions with real-time match highlighting, capturing group inspection, live replacement preview, and plain-English pattern explanations.

Launch tool
Available now

SQL Formatter & Query Beautifier

Format, beautify, and minify raw SQL queries across PostgreSQL, MySQL, SQLite, Oracle, and SQL Server. Customize keyword casing, clause indentation, and comma placement with 100% client-side privacy.

Launch tool
Available now

Hash & Checksum Generator

Instant cryptographic hashing, file integrity checksums, and HMAC message authentication. Processes text and binary files locally in your browser with zero server uploads.

Launch tool
Available now

URL Encoder & Decoder with Query Parameter Inspector

Encode and decode URLs, query strings, and URI components conforming to RFC 3986 and WHATWG standards. Inspect, modify, and build query parameters with instant live feedback.

Launch tool
Available now

Chmod Permissions Calculator & Linux Command Generator

Visual permission matrix and real-time command builder for Linux, Unix, and macOS. Toggle read, write, and execute bits, calculate octal codes, configure SUID/SGID/Sticky bits, and generate production-ready terminal commands.

Launch tool
Available now

JSON Formatter, Validator & Fixer

Beautify, validate, minify, and automatically repair messy or broken JSON payloads in real time. Runs 100% client-side in your browser with zero data logging.

Launch tool
Available now

YAML ⟷ JSON Converter

Instantly convert between YAML and JSON with real-time error detection. Runs 100% in your browser for absolute privacy.

Launch tool
Available now

Unix Timestamp & Epoch Converter

Simple, real-time bi-directional converter between Unix epoch timestamps and human dates. 100% client-side with zero tracking.

Launch tool
Available now

AI Bot & Scraper Blocker (robots.txt Generator)

Protect your content from unauthorized AI model training while preserving traffic from Google, Bing, and AI search engines.

Launch tool
Available now

Environment Variables (.env) Converter

Transform .env files into JSON, Docker run flags, Docker Compose, Kubernetes ConfigMaps, or masked safe configs instantly.

Launch tool
Available now

Docker Run to Docker Compose Converter

Transform one or more docker run terminal commands into clean, formatted docker-compose.yml files instantly in your browser. No data ever leaves your computer.

Launch tool
Available now

Git Command Builder & Emergency Fixer

Quickly resolve common Git accidents, build complex Git commands with customized parameters, and browse an instant emergency cheat code reference.

Launch tool
Available now

Text Diff & Compare – Free Online Diff Checker

Compare two text documents, code snippets, or configurations directly in your browser. Inspect additions, deletions, and character-level differences side-by-side or unified with zero server uploads.

Launch tool
Available now

cURL to Code Converter

Convert a cURL command into editable JavaScript, Python, Go, or PHP code in seconds. Your request stays in your browser.

Launch tool

HOW DEVLOAD WORKS

Fast tools with clear privacy boundaries

Many formatters, generators, calculators and document tools run in your browser. Network checks and media tools make online requests only when their task requires them.

01 // LOCAL WHERE POSSIBLE

Browser-based processing

Supported developer, text, QR, PDF and calculator tools process inputs in browser memory. Tools that need live website or media data clearly make an online request.

Your input→Browser processing→Clear resultOnline request when required
02 // DIRECT WORKFLOWS

Built for quick tasks

Each page focuses on one job, with useful defaults, validation and copy-ready or downloadable results.

1Focused tool
03 // EASY ACCESS

No account required

Open a tool and use it without creating an account or installing a desktop application.

Ready in your browser
04 // PRACTICAL RANGE

One collection, many everyday tasks

Format developer data, transform text and PDFs, inspect websites, work with QR codes, calculate estimates, or handle supported public media.

JSON & YAMLText, PDF & QRWeb, DNS & Calculators

Choose the right tool

Choose the tool that matches your task

Choose from media downloaders, everyday calculators, web and network checks, or the PDF QR scanner. Each focused tool explains its supported input and returns a result you can review.

Instagram Reels

Use a Reel share link when you want a video file. The Reel tool shows a preview and offers an MP4 when Instagram makes the media available to the service. Captions, thumbnails, and counts may be missing even when the video itself can be downloaded. If a Reel is private, removed, or restricted, the tool may have no file to offer.

Open Reel downloader

Instagram photos

Paste a link to an Instagram photo post rather than a profile or feed. A post can contain more than one image; review the result and choose the photo you intend to save. Image availability depends on the post and what Instagram supplies to the service. A deleted or restricted post may not return a file.

Open photo downloader

Pinterest video Pins

Paste a link to a public video Pin, including a Pinterest share link. The tool checks the Pin and shows a download when it finds a usable video file. A still image Pin will not become a video, and the resolution depends on the file Pinterest supplies. Open the original Pin if you need to confirm you copied the right post.

Open Pinterest downloader

Pinterest image Pins

Paste a public image Pin or pin.it share link to preview and save the best image Pinterest exposes. Supported multi-image Pins can return more than one photo, each with its own download button. Use the separate video tool when the Pin contains a video.

Open image downloader

Reddit videos

Use a Reddit post or share link for a Reddit-hosted video. When the post is accessible, the downloader lists the resolutions found in its video manifest. Some Reddit videos store sound separately, so the server combines the tracks for the MP4 download. Private posts, removed posts, and Reddit access checks can prevent a result even when the link opens in your own browser.

Open Reddit downloader

Exact Age Calculator

Enter a date of birth to calculate exact age in years, months, and days—today or on any specific date.

Calculate age

Data Life Calculator

Enter your remaining data to estimate how long it could last for your everyday online activities.

Estimate data life

Work Hours Calculator

Add each clock-in and clock-out session to see your completed hours, remaining target time, and projected finish.

Calculate hours

API Cost Calculator

Estimate monthly request-processing and bandwidth costs for a REST API with your own provider rates and free-tier allowances.

Calculate age

Website Bandwidth Calculator

Estimate how much hosting bandwidth your website may use each month from traffic, page views, and average page weight.

Calculate age

AI Token Cost Calculator

Estimate the cost of an AI model request or workload using separate input and output token prices.

Calculate age

Video Upload Time Calculator

Estimate how long a video or large file will take to upload using its file size and your measured upload speed.

Calculate age

ISP Bandwidth Calculator

Estimate required upstream capacity from subscribers, average plan speed, oversubscription, and optional headroom.

Calculate age

WiFi Access Point Capacity Calculator

Estimate how many active devices your WiFi network can support and how many access points you need.

Calculate age

Database Storage Growth Calculator

Estimate how much primary and backup storage your database will need over time.

Calculate age

Website and domain age

This web and network tool checks a domain name instead of downloading media. Enter a domain such as example.com to see the registration date and any available public registry details. The reported age is based on the current registry record. Some registries omit dates or redact fields, so a missing field does not necessarily mean the domain has no history.

Open Website & Domain Age Checker

QR codes in PDF files

Choose or drop a PDF to scan its pages for QR codes. The browser-based scanner can find multiple codes, show the page where each appears, and identify common data such as website links, contact details, Wi-Fi settings, payment requests, and text. The selected PDF stays on your device.

Open PDF QR Scanner

DNS Lookup Tool

Inspect the live DNS records published for a domain, or run a reverse PTR lookup for an IP address.

Look up DNS

MAC Address Lookup

Enter a device MAC address to find its registered vendor, OUI assignment and address type.

Look up MAC

Online Port Checker

Test common or custom TCP ports on a public domain or IP address and see clear connection results.

Scan Ports

Email Domain Configuration Checker

Check whether a domain publishes the DNS records needed to receive email and authenticate outgoing messages.

Check email configuration

IPv4 & IPv6 Subnet Calculator

Calculate IPv4 or IPv6 network ranges and prefixes, or generate a custom IPv4 address list.

Calculate a subnet

URL Redirect Checker

Check a URL redirect chain, HTTP status codes, final destination, redirect types, and response times with a secure server-side redirect checker.

Check Redirects

Website Technology Checker

Find out what technology a website uses. Detect its CMS, framework, hosting, CDN, analytics, web server and JavaScript libraries free online.

Check technologies

Website Status Checker

Check whether a website is up or down right now. Test its live HTTP status, response time, final URL and redirects with a free website status checker.

Check website

Open Graph & Social Media Card Previewer

Simulate pixel-perfect link preview cards across Twitter/X, LinkedIn, Facebook, Discord, Slack, WhatsApp, and Google Search. Inspect any live URL or design meta tags with 1-click code export.

Inspect Live URL

Text to PDF Converter

Convert plain text, TXT notes, memos, or code snippets into clean, paginated PDF documents with custom typography, running headers, and zero watermark—100% private in your browser.

Open tool

Cron Expression Generator & Explainer

Build a reliable cron schedule field by field, understand it in plain English, and preview the next five execution times before you deploy it.

Launch tool

JSON to TypeScript & Schema Converter

Turn JSON payloads and API responses into clean TypeScript interfaces, Zod validators, or TypeBox schemas with nested types and inferred optional fields.

Launch tool

UUID / GUID v4 & v7 Bulk Generator

Generate cryptographically secure UUID v4 and RFC 9562 time-sortable UUID v7 identifiers in bulk up to 10,000, with instant timestamp extraction, custom case, hyphens, and multi-language array formatting.

Launch tool

JWT Debugger & Token Inspector

Decode, verify, and inspect JSON Web Tokens (JWT) in real time. Validate standard claims, check token expiration, and verify signatures with 100% client-side privacy.

Launch tool

Base64 & Hex Encoder / Decoder

Encode and decode plain text, binary files, images, and data buffers into Base64, Base64URL, Hex, and binary bits in real-time. 100% client-side privacy with custom formatting and file exports.

Launch tool

RegEx Tester & Debugger

Test, debug, and optimize regular expressions with real-time match highlighting, capturing group inspection, live replacement preview, and plain-English pattern explanations.

Launch tool

SQL Formatter & Query Beautifier

Format, beautify, and minify raw SQL queries across PostgreSQL, MySQL, SQLite, Oracle, and SQL Server. Customize keyword casing, clause indentation, and comma placement with 100% client-side privacy.

Launch tool

Hash & Checksum Generator

Instant cryptographic hashing, file integrity checksums, and HMAC message authentication. Processes text and binary files locally in your browser with zero server uploads.

Launch tool

Text Diff & Compare – Free Online Diff Checker

Compare two text documents, code snippets, or configurations directly in your browser. Inspect additions, deletions, and character-level differences side-by-side or unified with zero server uploads.

Launch tool

cURL to Code Converter

Convert a cURL command into editable JavaScript, Python, Go, or PHP code in seconds. Your request stays in your browser.

Launch tool

PDF Text Extractor

Extract readable plain text, paragraphs, and notes from PDF files directly in your web browser with 100% privacy and zero server uploads.

Open tool

Free Online Case Converter & Word Counter

Transform text casing between 15 formats instantly, clean spacing, and inspect real-time word counts, reading duration, and keyword density—all 100% in your browser.

Open tool

Markdown to Text & HTML Converter

Transform formatted Markdown documents into clean plain text or HTML with immediate live rendering. Extract unformatted text for emails and articles or generate valid HTML code client-side.

Open tool

Lorem Ipsum & Dummy Content Generator

Generate realistic placeholder text, developer terminology, business copy, and mock user profile schemas in Plain Text, HTML, Markdown, or JSON.

Open tool

HTML Entity Encoder & Decoder

Encode special characters into standard HTML entities or decode escaped entities back to readable text. Supports named, decimal, and hexadecimal formats with a live character cheat sheet and safe preview.

Open tool

Line Sorter, Deduplicator & Text Cleaner

Clean, alphabetize, and deduplicate lists in real-time. Sort alphabetically, naturally, or by length; remove duplicates; strip empty lines; and bulk-add prefixes, quotes, and delimiters.

Open tool

URL Encoder & Decoder with Query Parameter Inspector

Encode and decode URLs, query strings, and URI components conforming to RFC 3986 and WHATWG standards. Inspect, modify, and build query parameters with instant live feedback.

Launch tool

Chmod Permissions Calculator & Linux Command Generator

Visual permission matrix and real-time command builder for Linux, Unix, and macOS. Toggle read, write, and execute bits, calculate octal codes, configure SUID/SGID/Sticky bits, and generate production-ready terminal commands.

Launch tool

JSON Formatter, Validator & Fixer

Beautify, validate, minify, and automatically repair messy or broken JSON payloads in real time. Runs 100% client-side in your browser with zero data logging.

Launch tool

YAML ⟷ JSON Converter

Instantly convert between YAML and JSON with real-time error detection. Runs 100% in your browser for absolute privacy.

Launch tool

Unix Timestamp & Epoch Converter

Simple, real-time bi-directional converter between Unix epoch timestamps and human dates. 100% client-side with zero tracking.

Launch tool

Before you save

A smoother download starts with a usable link

Copy the specific post

Use the platform’s Share or Copy link action on the media you want. A home feed, profile, board, subreddit, or search results page does not identify a single file. Keep the complete URL, including any required share parameters, and paste it into the matching tool.

Review the result

Wait for the preview or quality options before clicking Download. A preview confirms what the service could identify; it does not guarantee every detail will be present. For Reddit, choose the resolution you prefer. For a photo post with several images, select the image you intend to save.

Try again when a link expires

Download links are temporary. If a button stops working, paste the original post link again to request a fresh result. Content may also disappear because the creator removed it or the platform changed access. Save only media you own or have permission to use.

The DevsLoad approach

Useful first. Clear at every step.

01

Focused tools

Use a dedicated workflow for formatting code, converting text, scanning a QR code, checking a website, calculating a result, or handling supported media.

02

Straightforward results

Get useful details when they are available and a clear explanation when they are not.

03

Privacy where it matters

The PDF QR Scanner works locally in your browser, so the selected document is not uploaded to DevsLoad.

Good to know

Questions about DevsLoad

What free online tools does DevsLoad offer?

DevsLoad includes developer tools such as JSON and YAML converters, text and PDF utilities, QR tools, calculators, website and DNS checks, and downloaders for supported public media.

Do I need to install software or create an account?

No. DevsLoad tools run in a modern web browser and do not require an account. Some tools process data locally, while website checks and media tools contact the relevant online service when required.

Are DevsLoad tools free to use?

Yes. The tools listed on DevsLoad are available to use for free.

Can I scan QR codes from a PDF?

Yes. Open the PDF QR Scanner and choose or drop a PDF. It scans up to 50 pages locally in your browser and displays each readable QR value with its page number and content type.

Which media download tools are available?

DevsLoad has dedicated tools for supported public Instagram Reels and photos, Pinterest videos and images, and Reddit videos. Only save media you own or have permission to use.