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

What is FixFlowHub and what tools does it offer?

FixFlowHub is a free, browser-based online toolbox with 120+ tools across six categories: PDF tools (merge, compress, split, convert), image tools (convert, resize, crop, compress), text and generator tools (typing speed test, hashtag generator, fancy text, word counter), business tools (invoice generator, email signature maker), calculators (BMI, loan, redundancy pay, water intake), and utility tools (QR code generator). All tools are free, no sign-up required.

Are all tools on FixFlowHub really free?

Yes. All 120+ tools are completely free with no hidden fees, premium tiers, or daily limits. PDF tools, image editors, typing speed test, hashtag generator, invoice maker, calculators — everything is 100% free forever. The service is sustained through non-intrusive Google AdSense advertising.

Does FixFlowHub have a free typing speed test?

Yes. The free typing speed test measures WPM (words per minute), CPM, and accuracy. It offers six durations from 15 seconds to 5 minutes and six text modes including real paragraphs and numbers, plots your net WPM once per second, and lists the words you mistyped so you know what to practise. No sign-up needed — visit /typing-speed-test and start typing.

How do I generate hashtags for free on FixFlowHub?

Go to /hashtag-generator, enter your topic, choose a platform (Instagram, TikTok, Twitter/X, YouTube, or LinkedIn), and click Generate. You instantly get 20–30 trending, relevant hashtags you can copy in one click. No account or download required.

Can I create a free invoice on FixFlowHub?

Yes. The Invoice Generator at /invoice-generator creates professional PDF invoices for free. Add your business name, client details, line items, tax, discount, and notes. The invoice previews live and downloads as a PDF — no sign-up, no watermarks.

Are my files stored on FixFlowHub servers?

No. All processing happens in your browser using client-side JavaScript and WebAssembly. Your PDFs, images, and documents never leave your device and are never uploaded to any server. When you close the tab, everything is cleared from browser memory.

Do I need an account to use the tools?

No account or sign-up is needed for any tool. Just visit the tool URL and start working — no email, no password, no personal information required. FixFlowHub holds zero personal data about you.

Does FixFlowHub work on mobile phones?

Yes. All 120+ tools are fully mobile-responsive with touch-friendly controls, collapsible menus, and adaptive layouts. The typing speed test, hashtag generator, calculators, PDF tools, and image converters all work on iOS and Android browsers without any app download.

What image formats does FixFlowHub support?

FixFlowHub supports 12+ image formats: JPEG, PNG, WebP, AVIF, JXL, GIF, BMP, TIFF, HEIC/HEIF (iPhone photos), SVG, ICO, and JFIF. For PDFs: merge, split, compress, convert to images, lock, and unlock. Batch processing is supported.

How accurate is the redundancy pay calculator?

The Redundancy Pay Calculator uses the official UK Government statutory formula: 0.5 week per year under 22, 1 week per year aged 22–40, 1.5 weeks per year aged 41+, capped at the 2024 statutory weekly pay limit and 20-year service maximum. Always verify with an employment solicitor.

Can I process multiple files at once?

Yes. FixFlowHub supports batch processing — upload multiple images or PDFs simultaneously, process them all at once, and download individually or as a ZIP. Especially useful for bulk image conversion and PDF merging.

Why do I see advertisements on the site?

Google AdSense advertising keeps FixFlowHub completely free for everyone. Ads are placed in non-intrusive locations. Your files and processing data are never shared with advertisers — ad cookies are entirely separate from the local in-browser tool processing.

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