Format JSON, decode JWTs, generate passwords and secret keys, convert timestamps and compress images — all in your browser. Nothing you paste is ever uploaded.
Quickly transform your JSON data into clean, formatted YAML. Features real-time validation, syntax highlighting, and easy copying.
Use Tool
Create strong, secure passwords with customizable length and character sets.
Use Tool
Format and beautify JSON data with syntax highlighting and validation.
Use Tool
Encode text or files to Base64 format or decode Base64 strings.
Use Tool
View and query SQLite databases directly in your browser with a visual query builder and SQL editor.
Use Tool
Decode and inspect JWT tokens instantly. View header, payload, signature, expiration status, and time claims.
Use Tool
Switch data between the formats you actually work with — JSON and YAML or CSV, HEX and RGB colors, px and rem, epoch time and readable dates, hex and binary, camelCase and snake_case. Every conversion runs locally, so it's instant and private.
Shrink, convert and prepare images for the web without sending them to a server. Your files are processed by your own browser, so there are no upload limits, no queues and no privacy trade-offs.
Create passwords, encryption keys, UUIDs, hashes, signed JWTs and QR codes using your browser's cryptographically secure random number generator, plus lorem ipsum placeholder text for layouts. Nothing you generate is sent or stored anywhere.
Clean up and preview structured text: pretty-print and validate JSON, write Markdown with a live preview, or render HTML and export it to PDF or Word.
Translate data in and out of the encodings the web runs on — Base64, percent-encoding and JSON Web Tokens — and see exactly what's inside them.
Tools for everyday development tasks: test a regex against real text, work out the right chmod mode for a file, or open a SQLite database and query it right in the browser.
Tools for captions and transcripts: fix subtitle timings and convert SRT to VTT, translate a subtitle file into another language, or turn speech in an audio or video file into text and subtitles. Editing and transcription run in your browser; only the translator sends text to an AI model.
Combine several PDFs into one, pull out the pages you need, turn sideways scans upright, make a PDF from photos, or save PDF pages as images. Everything runs in your browser, so your documents are never uploaded and there are no page limits or watermarks.
Every tool runs in your browser. JSON, tokens, images and keys are processed locally and never uploaded, so it's safe to work with real data.
There's no server round-trip, no queue and no file-size cap. Format a 5 MB JSON file or compress 50 images at once.
Open a tool and use it. No sign-up, no trial, no paywall halfway through a task.
Yes. Every tool is free to use with no account, no usage cap and no premium tier.
The tools process your input with JavaScript in your own browser and don't send it to a server, so the data never leaves your device. The one exception is the AI Subtitle Translator, which sends the subtitle text you submit to an AI service to translate it. As with any website, avoid pasting secrets on a shared or untrusted computer.
Yes. The tools work in any modern browser on desktop, tablet or phone, though larger editors like the SQLite viewer are easiest to use on a bigger screen.
They use the Web Crypto API's crypto.getRandomValues, the browser's cryptographically secure random number generator, with rejection sampling so every character is equally likely.