26 small tools, zero funny business

Useful tools that
mind their own business.

Clean a CSV. Merge a PDF. Resize an image. Your files stay on your device, where they belong.

Find a tool ↓Local processing

THE QUIET PROMISE

0uploads
Files stay put

0trackers
No ad-tech scripts

0accounts
Just open & work

Close the tab and it’s gone. Simple as that.

THE WORKBENCH

What needs doing?

Pick a tool. Finish the task. Keep the data.

/

{ }DataJSON formatterValidate and make JSON readable.

{·}DataJSON minifierStrip whitespace without touching data.

J→CDataJSON → CSVTurn object arrays into clean CSV.

C→JDataCSV → JSONConvert tabular data into objects.

CSVDataCSV cleanerTrim cells and remove duplicate rows.

A↓TextSort linesNatural alphabetical line sorting.

1×TextRemove duplicatesKeep the first of every repeated line.

AaTextCase converterSentence, title, upper, or lower case.

123TextText counterWords, characters, lines, and reading time.

↺TextFind & replaceReplace every exact match at once.

/—TextSlug makerCreate clean URL-safe slugs.

%DeveloperURL encoderSafely encode or decode URL text.

64DeveloperBase64Encode or decode UTF-8 text.

#DeveloperSHA-256 hashCreate a one-way browser-native hash.

IDDeveloperUUID generatorGenerate up to 100 secure UUIDs.

⌚DeveloperTimestamp converterConvert ISO dates and Unix timestamps.

↔ImageImage resizerResize and compress JPG, PNG, or WebP.

IMGImageImage converterConvert between JPG, PNG, and WebP.

PDF+PDFMerge PDFsCombine PDFs in the order you choose.

PDF÷PDFSplit PDFExtract a page range into a new PDF.

W→TTextDOCX to textExtract readable text from Word documents.

00TimeOnline stopwatchTime events precisely and record laps.

T−TimeCountdown timerSet a timer with a clear browser alarm.

25TimePomodoro timerAlternate focused work and useful breaks.

TZTimeTimezone converterCompare a date and time across world zones.

☀TimeKeep screen awakePrevent display sleep while this tab stays active.

WHY LOCAL?

The safest upload is no upload.

WithinTab uses your browser as the workshop. Processing happens on your device, so bank statements, client lists, and family photos never travel to a mystery server.

✓
Private by architectureNot a promise to delete later. Nothing is sent in the first place.
✓
Fast by defaultNo upload queue, no server round trip, no account check.
✓
Cheap to keep usefulNo AI meter running in the background and no surprise operating bill.

STRAIGHT ANSWERS

Good to know.

Do files really stay on my device?＋

Yes. Every current tool runs in your browser. You can even process a file after the page has loaded and your connection drops.

Why is it free?＋

WithinTab is currently a free, experimental project. Local processing keeps operating costs small, so there are no payments, subscriptions, accounts, or ads.

Can I use it for confidential work?＋

Local processing reduces exposure, but your device and browser still need to be secure. For regulated or high-stakes work, follow your organization’s policies.