Free developer tools

Fast, private tools for developers

DevToolDeck is a free toolkit for everyday developer tasks (format JSON, work with PDFs, convert video, generate IDs, and more), processed locally whenever possible so your data stays on your device.

Runs in your browser
·
Instant results
·
Free forever

On-device AI

Summarize PDF with AI

On-device AI summaries of any PDF

AI Chat

Private chat with on-device AI

AI Image Generator

Generate images from text, locally

Video & audio

Video Converter

Convert video to MP4, WebM, MKV, MOV or AVI

Compress Video

Reduce video file size

Resize Video

Change a video's resolution

Trim Video

Cut a clip from a video

Video to GIF

Turn a video into an animated GIF

Extract Audio from Video

Save a video's audio as MP3, M4A, WAV or Opus

Mute Video

Remove the audio from a video

PDF · Organize

Merge PDF

Combine PDFs into one file

Split PDF

Split a PDF into multiple files

Remove PDF Pages

Delete pages from a PDF

Extract PDF Pages

Pull selected pages into a new PDF

Organize PDF

Reorder, rotate and delete pages

Rotate PDF

Rotate pages 90, 180 or 270°

Compress PDF

Reduce PDF file size

PDF · Convert

JPG to PDF

Convert images into a PDF

PDF to JPG

Convert PDF pages to images

PDF · Edit & sign

PDF Editor

Edit the real content of your PDF

Add Page Numbers to PDF

Insert page numbers into a PDF

Watermark PDF

Stamp text over every page

Crop PDF

Trim margins from PDF pages

Formatters

JSON Formatter & Validator

Beautify, minify and validate JSON

Converters

Base64 Encoder / Decoder

Encode and decode Base64 text

Unix Timestamp Converter

Epoch to date and back

Color Converter

HEX, RGB and HSL conversions

Generators

UUID Generator

Generate UUID v4 in bulk

Hash Generator

SHA-1, SHA-256, SHA-384 & SHA-512

CSS Color Filter Generator

Turn any color into a CSS filter

QR Code Generator

Create QR codes from text or URLs

Text utilities

Text Diff Checker

Compare two blocks of text

Regex Tester

Test regular expressions live

Case Converter

camelCase, snake_case, kebab & more

Web & encoding

JWT Decoder

Inspect JSON Web Tokens

URL Encoder / Decoder

Percent-encode and decode URLs

36 tools and counting