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Toolfyra Guides
5 min read • Updated 2026-08-28 • Free forever
Deep, practical articles from our research — every guide is free, honest and links to tools that run 100% in your browser.
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DV Lottery Photo Requirements (2026): The Complete 600×600…
Exact DV lottery photo rules: 600×600 pixels, under 240KB, head 50–69%, white background. Every reje…
✈️EU261 / UK261 Flight Compensation: The Free DIY Claim Guid…
Delayed 3+ hours, cancelled or denied boarding in the EU/UK? How much you're owed (€250–600), how to…
🔒No-Upload Online Tools: The Privacy-First Way to Get Thing…
Server-based tools copy your files to unknown computers. Browser-based (client-side) tools process l…
🧾GST & VAT for Freelancers: The Plain-English Guide (2026)
Freelancer's plain-English guide to GST/VAT: adding vs removing tax, reverse charge, what invoices m…
🧑💻The Everyday Developer Cheat-Sheet: JSON, Base64, JWT, Cro…
The practical dev cheat-sheet: pretty-print JSON, decode Base64 (UTF-8 safe), read JWT claims and ex…