Small tools that do one thing, fast.
Compress an image, format some JSON, decode a JWT, work out a loan payment. Everything runs locally in your browser — your files never leave the machine.
Shrink JPG, PNG and WebP without a visible quality drop.
Resize by pixels or percentage, with the aspect ratio locked.
JPG, PNG, WebP and AVIF, converted in any direction.
Pull the dominant colours out of any picture as HEX, RGB or HSL.
The single colour a picture reads as, plus how much of the frame it covers.
HEX, RGB, HSL, HSV and CMYK from whatever you paste in.
Click anywhere on an image and get the HEX code under the cursor.
The same picker in RGB and HSL, for when HEX is not what you need.
Write og: and twitter: tags and preview the card as you type.
Valid JSON-LD for Article, Product, FAQ and Breadcrumbs.
Build a robots file rule by rule, then test a URL against it.
Tag campaign links the same way every single time.
Titles that fit the SERP width, measured in pixels not characters.
Descriptions with a live snippet preview and a truncation warning.
Turn a list of URLs into a valid XML sitemap with priorities.
Work out which URL should be canonical, and get the tag.
Format, validate and minify in one pane, with the error line marked.
Text and files, with the URL-safe alphabet as an option.
Header, payload and expiry — without sending the token anywhere.
Line by line, with the changed words marked — the way a code review shows it.
Live matches, capture groups and a cheat sheet beside them.
Check a document against a JSON Schema and list every violation.
Strip every space and newline, keep the data identical.
Indent XML and fold long attribute lists down to size.
Increase, decrease, and “X is what percent of Y” in one place.
Monthly payment, total interest and the full amortisation schedule.
Add VAT or pull it back out, at any rate you need.
Days, weeks and working days between two dates.
How much a number grew, in percent and in absolute terms.
The same in the other direction, without the sign confusion.
What a regular contribution turns into, year by year.
Payment, overpayment and the effect of paying down early.
Long, genuinely random, and it never leaves your device.
URLs, Wi-Fi and vCards, downloadable as SVG or PNG.
Linear, radial and conic, with the CSS ready to copy.
Paragraphs, lists or plain words, in Latin or Russian.
Handles that are still short and still pronounceable.
People names for test data, by locale and gender.
Name ideas with the matching domain checked as it goes.
Available domains around a keyword, across the usual TLDs.
Create an account and the limits go away
Without one you get 10 operations a day and a 5 MB file cap. With one: batch processing, files up to 25 MB, and your favourites and history on every device. Free, and it stays free.