Free Online Tools — PDF, Image, AI & Calculator

FixFlowHub is a free, browser-based toolbox with 120+ tools — PDF merger, image converter, typing speed test, hashtag generator, invoice maker, calculators and more. No sign-up, no file uploads, everything runs in your browser.

Everything runs on your own device

The tools here do their work in the browser tab you already have open. A PDF you merge, an image you compress, a note you write, an invoice you build — none of it is uploaded to a server, because none of it needs to be. Modern browsers can read files, transform them and hand them back as a download without the round trip.

That has consequences beyond privacy. There is nothing to sign up for, because there is no account holding your files. There are no daily limits, because processing costs us nothing per use. Most tools keep working with the network off once the page has loaded. And a file you never uploaded cannot leak from a server that never had it.

The exceptions are honest ones: anything that fetches live rates, and the AI writing tools, need the network to do their job. Everything else does not.

What is here, by category

Around 120 tools across five groups. PDF work — merging, splitting, compressing, converting to and from images, locking and unlocking. Image work — format conversion between JPG, PNG, WebP, AVIF and more, compression, resizing, cropping, background removal and OCR that pulls text out of a photo.

Calculators for money and health: loans and mortgages, salary and tax, compound interest and retirement, BMI and calories, statutory redundancy and severance pay. Developer utilities: JSON formatting, binary and HTML entity conversion, colour picking, case conversion.

And the everyday ones that do not fit a box: a typing speed test, an online notepad, an invoice generator, an email signature builder, QR codes, password generation, word counting, hashtags.

Why free, and what that costs you

The site is paid for by advertising, and nothing else. There is no premium tier holding features back, no watermark on anything you produce, and no export limit. You are not the product either — since files never reach a server, there is no file data to sell, and no account to attach a profile to.

What it costs you is the ads themselves. They are kept out of the way of the tools rather than in front of them, and the tools stay usable with a blocker running.

Frequently Asked Questions

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