Tiny Tiny Tools

Free · Private · Browser-based

Useful tools. Big help.

Simple tools for documents, images, calculations, text, and everyday tasks.

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Regex TesterTest a regular expression against sample text and see every match and capture group.JWT DecoderRead the header, payload, and claims inside a JSON Web Token. Decoding only — signatures are not verified.CSV to JSONConvert CSV to JSON, handling quoted fields, embedded commas, and line breaks.PDF CompressorRasterize pages at a chosen DPI and JPEG quality to try to reduce image-heavy PDFs.Remove EXIFSee the GPS coordinates, camera serial number and timestamp a photo is carrying, then strip them without re-encoding the image.Watermark PDFStamp text or a logo across chosen pages, with control over opacity, rotation, position, and tiling.Split PDFExtract a page range into one PDF or package every page as a separate PDF in a ZIP.Diff CheckerCompare two texts line by line and highlight added and removed lines.HEIC to JPGCreate a compatible JPG copy from an HEIC or HEIF photo while understanding re-encoding and metadata changes.Hash GeneratorProduce SHA-1, SHA-256, SHA-384, or SHA-512 digests of text or a file and compare them against a published checksum.Cron Expression GeneratorBuild and read cron schedules, with the next run times and the day-field OR rule explained.Password GeneratorGenerate strong random passwords with your choice of length and character types.
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Quick to use
No installation
Works in your browser
Free, with no sign-up

How it works

Three simple steps. No account required.

  1. 01

    Choose a tool

    Pick the tool that matches your task.

  2. 02

    Add what you need

    Upload a file or enter your information.

  3. 03

    Get your result

    Download, copy, or use the result instantly.

Built for simple,
private work

Browser-first processing

The work a tool does happens on your device, not on a server.

Predictable methods

Tools work the same way every time.

Your files stay private

Files you select are processed in your browser and are not uploaded.

Tested, not asserted

All guides

Each of these is a test I actually ran, on a stated date, with the script published so you can run it yourself.

17 September 2026The Norway problem, and other ways YAML changes your configEleven ordinary config snippets through two real parsers. Eight came out different, three of those with no warning from either, and one renamed a key.17 September 2026What PDF compression actually does to your fileThis site’s own compressor run across its three presets: 79% smaller on a scan, larger on every setting for a text PDF, and selectable text gone from all of them.17 September 2026What your photos reveal, and what removing it actually costsA phone photo carries your position to about a tenth of a metre, the time, the device and often its serial number. Three ways to remove it, measured: one leaves the picture byte-for-byte untouched.17 September 2026PNG vs JPG vs WebP: which should you use?Four test images encoded to PNG, JPEG and WebP in the same browser encoder the tools here use, with the byte sizes: why a photographic PNG is enormous, and what a JPEG-to-PNG round trip really costs.23 August 2026Are free PDF tools safe?One test PDF sent to 13 popular online PDF tools, with the network panel open: which ones uploaded the file, and what each privacy policy actually promises about deleting it.

Frequently asked questions

Are Tiny Tiny Tools free to use?

Yes. Every tool is free to use, with no trials, locked features, or payment steps.

Do I need to create an account?

No. Open any tool and start using it right away — there is no sign-up or login requirement.

Are my files uploaded or stored?

No. Document and image tools process files locally in your browser. Selected file bytes are not sent to Tiny Tiny Tools or a third-party processing API.

Do the tools work on mobile devices?

Yes. Tools, forms, and result views are designed to reflow safely on phones and tablets as well as desktop screens.

Which browsers are supported?

Current versions of Chrome, Edge, Firefox, and Safari. Keeping your browser up to date gives the best results.