Small, sharp tools for the boring parts of your day.
Free tools that open instantly and do one thing well. Everything runs in your browser — what you type and the files you pick never leave your machine.
- Runs locally, nothing uploaded
- No account, no rate limits
- Free forever
The toolbox
Every tool, one click away
No installs, no sign-up wall, no “upgrade to export”. Open a tab, get the job done, close the tab.
Armador de Equipos
Type in the players, drag them into formation, and download a lineup image to drop straight into the group chat.
- Web
JSON Studio
Format, validate, query and diff JSON of any size. Handles 100 MB files without freezing the tab.
- Web
- CLI
Image Squeeze
Compress PNG, JPEG, WebP and AVIF in bulk. Pick a target size and keep the quality you can actually see.
- Web
- macOS
- Windows
Regex Lab
Write patterns with live match highlighting, a plain-English explainer, and a catastrophic-backtracking warning.
- Web
JWT Inspector
Decode headers and claims, check expiry, and verify signatures locally. Tokens are never sent anywhere.
- Web
Base64 Bridge
Encode and decode text, files and data URIs both ways, with instant previews for images and fonts.
- Web
- CLI
ID Forge
Generate UUID v4 and v7, ULIDs and NanoIDs in bulk, then copy them as a list, CSV or SQL insert.
- Web
- API
Cron Translator
Turn any cron expression into plain English and preview the next ten runs in your own timezone.
- Web
Timestamp Desk
Convert between Unix, ISO 8601 and human dates across timezones, with DST edges called out.
- Web
- CLI
Palette Weaver
Build accessible colour ramps in OKLCH with live WCAG contrast scoring, exported as CSS or Tailwind tokens.
- Web
Diff Viewer
Side-by-side text, JSON and YAML diffs with word-level highlighting and a shareable read-only link.
- Web
SVG Cleaner
Strip editor metadata, round path data and merge groups. Typically 60% smaller with identical output.
- Web
- CLI
Hash Bench
MD5, SHA-1, SHA-256, SHA-512 and HMAC for text or files, with checksum comparison in one pass.
- Web
- CLI
Showing 13 of 13 tools
Why TwinedByte
Tools that respect your time and your data
Private by default
Your files, text and photos are processed on your own machine and never sent to a server. There is no upload step, so there is nothing to leak, log or retain.
Fast enough to be boring
Each tool is a single page that is ready to use before you finish reading its heading. No loading screens, no queues, no waiting on someone else’s server.
One job each
No dashboards, no workspaces, no onboarding tour. Open it, do the thing, close the tab. Every tool has its own link so you can bookmark the one you use.
Free, with no catch
No sign-up wall, no trial countdown, no watermark on the way out and no ads. Nothing to cancel later because there was never anything to start.
Changelog
Shipped recently
A new tool or a meaningful upgrade lands roughly every month.
- New tool
Armador de Equipos joins the toolbox
Build a soccer lineup by dragging players into place, then export it as an image for the group chat.
- Improved
Image Squeeze goes native
Batch compression with AVIF output, plus macOS and Windows builds that use every core.
- Improved
JSON Studio handles 100 MB files
Streaming parser moved into a Web Worker — no more frozen tabs on big API dumps.
- Beta
Palette Weaver enters beta
OKLCH ramps with live WCAG scoring and one-click export to Tailwind theme tokens.
Missing a tool you keep rebuilding?
Tell us what you paste into a sketchy website every week and it goes on the build list. Most requests ship within a month.