🛠️ Free tools for developers & game makers

35 tools that run entirely in your browser — nothing is uploaded, nothing needs an account, nothing gets a watermark. Built by DevForge, the community platform for game and software developers.

Developer toolsImage toolsVideo & audioGame developmentDesign & colorText & writingSecurityGenerators & utilities

Developer tools

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JSON Formatter & Validator
Paste JSON, get it validated and pretty-printed with syntax highlighting.
JSON Validator · JSON Minifier
⇄
CSV ↔ JSON Converter
Paste CSV or JSON, get the other one back, plus a quick table preview.
📄
PDF Toolkit
Merge, split, rotate, watermark, number, reorder pages, build PDFs from images, or edit metadata — all on your device.
Merge PDF Files · Split PDF / Extract Pages · Rotate PDF Pages · Watermark PDF · Images to PDF (JPG / PNG to PDF) · Add Page Numbers to a PDF
🔍
Regex Tester & Debugger
Test a JavaScript regex against your text — live match highlighting and capture groups.
🔓
JWT Decoder
Paste a JSON Web Token to instantly see its decoded header and payload.
✂️
Base64 & URL Encoder / Decoder
Encode or decode text as Base64 or URL-encoded form, instantly.
Base64 Decode & Encode · URL Decode & Encode
🔐
Hash Generator
Compute SHA-1/SHA-256/SHA-384/SHA-512 hashes of any text via the Web Crypto API.
SHA-256 Hash Generator
🎲
UUID Generator
Generate one or a batch of random version-4 UUIDs.
GUID Generator
🔎
Text Diff Checker
Compare two blocks of text line by line and see exactly what changed.
⏰
Cron Expression Parser
Paste a cron expression to get a plain-English explanation and its next run times.
⏳
Unix Timestamp Converter
Convert epoch seconds/milliseconds to a human-readable date and back.
📝
Markdown Live Preview
Write Markdown and see the rendered HTML update instantly as you type.
📦
CSS & JS Minifier / Beautifier
Compress or reformat CSS/JS code — no build tools needed.
🚫
.gitignore Generator
Pick your languages, frameworks, and editors, get a ready-to-use .gitignore.
🎨
Color Contrast Checker (WCAG)
Check if a text/background color pair passes WCAG AA or AAA accessibility standards.
🔤
Text Case Converter
Convert text to UPPERCASE, Title Case, camelCase, snake_case, kebab-case and more, all at once.
🌈
CSS Gradient Generator
Build linear or radial gradients visually with a color-stop editor and copy the ready-to-use CSS.
🌒
CSS Box Shadow Generator
Build single or layered box shadows visually and copy the finished CSS.
✅
File Checksum Verifier
Hash a local file (SHA-1/256/384/512) and verify it against an expected checksum — file never leaves your device.

Image tools

🖼️
Image Toolkit
Convert & compress, crop to a social/store preset, generate favicons, or extract a color palette — one upload, four tools.
Image Converter — PNG · JPG · WebP · Image Compressor · PNG to JPG Converter · JPG to PNG Converter · WebP to PNG Converter · PNG to WebP Converter · Favicon Generator · Social Media Image Resizer · Steam Capsule & Store Image Resizer · Color Palette Extractor
🧩
Sprite Sheet Slicer & Packer
Slice a sprite sheet into frames with animation preview and ZIP export, or pack frames into a sheet with a JSON atlas.
🗺️
Normal Map Generator
Turn any texture or height map into a tangent-space normal map — strength, blur, OpenGL/DirectX Y flip, PNG export.
🔍
Pixel Art Scaler
Enlarge pixel art without blur — nearest-neighbour or Scale2x/Scale3x, up to 10×, PNG export.
🧱
Seamless Texture Checker
Tile a texture 3×3 to spot seams, then optionally blend them away and download the fixed PNG.
🧩
Vector Tracer
Turn a photo, logo or scan into editable vector paths — SVG, EPS, PDF and DXF export, with real control over colours and detail. Free, no account, no watermark.
PNG to SVG Converter · JPG to SVG Converter · Image to DXF Converter (laser & CNC) · Logo Vectorizer · Vectorize an Image Online

Video & audio

🔊
Retro SFX Generator
Classic 8-bit style sound effects — pick a category, tweak the knobs, export a WAV.
🎬
Video Trimmer & Compressor
Cut a clip down and shrink the file size — all processing happens on your device.
Compress Video · Trim Video
🔊
Text to Speech
Have your browser read text aloud, with voice, speed, and pitch controls — free, no account needed.

Game development

🔠
Bitmap Font Generator
Render any font into a glyph atlas PNG plus JSON / BMFont descriptor for Phaser, Pixi, Godot, Unity.

Design & color

🎨
Color Palette Generator
Generate random, complementary, analogous, triadic, or monochromatic color schemes from scratch.

Text & writing

📜
Fantasy & Sci-Fi Name Generator
Character, faction, and item names for your world — generate a batch, copy what you like.
📄
Lorem Ipsum Generator
Generate placeholder text by paragraphs, sentences, or words — classic Latin or plain English.
🔢
Word Counter
Live word, character, sentence, and paragraph counts, plus reading and speaking time estimates.
Character Counter

Security

🔑
Password Generator
Random, strong passwords with a strength meter — generated locally, never transmitted.

Generators & utilities

📱
QR Code Generator
Turn a link, Wi-Fi network, or contact info into a scannable code — export PNG or SVG.
Wi-Fi QR Code Generator

Why these tools are free

DevForge is a community for people who build games, tools and libraries. The tools on this page exist so you never have to upload a private file to a random converter site or install yet another program for a two-minute job. They are funded by unobtrusive ads and by the community — if you build something yourself, share it on DevForge.

Every tool processes your data locally with browser APIs (canvas, Web Audio, Web Crypto, WebAssembly). Close the tab and nothing remains on any server, because nothing was ever sent to one.