Kalmtools.
Free · No sign-up · Nothing uploaded

Small, sharp tools for the web.

The little jobs you look up again and again, a favicon, a QR code, a quick compress, each in a clean space that stays out of your way. The work happens in your browser, so your files stay with you.

The tools

One job each, done well. More land often.

Favicon generator

Turn text, a logo or an emoji into a full favicon pack with the HTML to match.

LiveDesign

Email signature maker

Build a tidy signature and copy it straight into your email.

LiveDesign

QR code generator

Make a crisp QR code for any link, in your colours, as PNG or SVG.

LiveDesign

Colour & contrast checker

Test any colour pairing against WCAG AA and AAA.

LiveDesign

Image compressor

Shrink a heavy image to a sensible size for web or email.

LiveImages

Image converter

Swap an image between PNG, JPEG and WebP in a click.

LiveImages

PDF merge & split

Join PDFs into one, or pull out the pages you need.

LivePDF

Word & character counter

Live counts for words, characters and reading time as you type.

LiveText

Case & slug converter

Any case you need, from title case to a clean URL slug.

LiveText

JSON formatter

Tidy, validate or minify JSON, with errors in plain words.

LiveCode

Background remover

Lift the subject off its background, right in the browser.

LiveImages

PDF compressor

Bring a heavy PDF down to a sensible size for email.

LivePDF

Base64 encoder & decoder

Encode text to Base64 or decode it back, either way.

LiveCode

Colour picker & palette

Pick a colour and get HEX, RGB, HSL and a set of shades.

LiveDesign

UUID generator

Generate v4 UUIDs, one or a whole batch, ready to copy.

LiveCode

Text diff checker

Compare two blocks of text and see what changed.

LiveText

Markdown to HTML

Write Markdown, preview it, and copy clean HTML.

LiveText

Timestamp converter

Convert between Unix time and a readable date.

LiveCode

Lorem ipsum generator

Placeholder text by the paragraph, sentence or word.

LiveText

SVG to PNG

Turn SVG code or a file into a crisp PNG at any size.

LiveImages

CSV to JSON

Turn a CSV into clean JSON, with headers as keys.

LiveCode

Why it stays calm

Three rules, kept honestly.

Quiet by design

One small sponsor at most, and plenty of room to breathe around every tool.

Yours to keep private

Files are handled inside your browser and stay on your own device.

Free, and yours

Use them as much as you like and keep whatever you make. No account needed.

One email when a new tool lands.

That's the whole list. A short note when there's something new worth your time. Leave whenever you like.

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