Tools that just work.
No account needed.

Small, fast utilities for everyday tasks. Open one, use it, done — nothing is uploaded anywhere.

Runs entirely in your browser

No login or account

Free forever

Available tools

Paste in messy, hard-to-read data and instantly see it cleaned up and organized. Also tells you if something is broken.

Good for: Making sense of data you copied from somewhere, checking if a file has errors, shrinking data down before sending it.

CSV ↔ JSON Converter

Convert spreadsheet-style data (CSV) into a structured format (JSON), or the other way around. Just paste it in — the tool figures out which way to go.

Good for: Moving data between spreadsheets and apps, reformatting exports from Excel or Google Sheets, prepping data for an API.

Paste two versions of any text and see exactly what changed — additions are green, removals are red. Like "track changes" but for anything.

Good for: Comparing two versions of a document, spotting what changed in a contract, reviewing edits before accepting them.

Paste any list and sort it alphabetically, by length, randomly, or in reverse. Remove duplicates and blank lines in one click.

Good for: Organizing a list of names, sorting tasks by priority, shuffling options, cleaning up a messy list before using it somewhere else.

Convert between any units — length, weight, temperature, cooking, data sizes, and more. Type a number and see all conversions at once.

Good for: Cooking with a foreign recipe, understanding file sizes, converting measurements for a project, anything your phone calculator can't do.

Text Case Converter

Paste any text and instantly see it in every case format — camelCase, snake_case, PascalCase, kebab-case, SCREAMING_SNAKE_CASE, Title Case, and more.

Good for: Renaming variables, converting headings to slugs, switching between naming conventions, formatting a list for different systems.

Base64 Encoder / Decoder

Encode plain text to Base64 or decode Base64 back to readable text. Includes URL-safe mode and a swap button for quick round-tripping.

Good for: Reading JWT payloads, encoding credentials for API headers, debugging Base64 strings from logs or API responses.

Write a regular expression and paste test text — matches highlight in real time. See every match, its position, and any capture groups listed below.

Good for: Building and debugging regex patterns, validating formats like emails or dates, understanding a pattern someone else wrote.

Drop an image, pick a preset or enter custom dimensions, and download a resized copy in JPG, PNG, or WebP. Includes presets for Etsy banners, social media, and more.

Good for: Resizing images for Etsy, social posts, or anywhere with a specific size or file size requirement. Nothing leaves your browser.

Background Remover

Drop one or more images and get transparent PNGs back. Batch supported — drop as many as you like. Processes entirely in your browser using a local AI model.

Good for: Product photos, profile pictures, stickers, anything where you need a clean cutout without Photoshop.

DOCX to TXT Converter

Drop one or more .docx files and download plain text versions instantly. Preserves paragraphs, tables, and line breaks. Nothing leaves your browser.

Good for: Stripping Word formatting before pasting into another tool, bulk-converting documents, extracting text for search or analysis.

For developers

How these are built and how to use or extend them.

Stack

Vanilla HTML, CSS, JavaScript — zero dependencies
No build step, no framework, no npm
Each tool is a single self-contained index.html
Hosted on GitHub Pages (static, free)

Algorithms

JSON: native JSON.parse / JSON.stringify
CSV: custom RFC-4180 parser (handles quoted fields)
Diff: LCS-based Myers diff, O(ND) space
Units: multiplicative factor table with special-cased temperature
Case: camelCase boundary splitting + per-format join rules
Base64: native btoa / atob with UTF-8 encode/decode
Regex: JS RegExp with live highlighting via DOM overlay
DOCX→TXT: ZIP binary parser → DEFLATE via DecompressionStream → Word XML walker; ZIP writer for bulk export
BG Remover: @imgly/background-removal ONNX model via WASM, fetched once from CDN and cached — images never leave the browser
Image Resizer: Canvas API — draw source image at target dimensions, export via toBlob with quality param; all processing in-browser

Source code

All tools are open source. View, fork, or contribute on GitHub. Each tool lives in its own folder — clone the repo and open any index.html locally, no server required.

Adding a tool

Create a new folder with an index.html
Add a card to this page's grid
Keep it self-contained — no external fetch calls
PRs welcome