OnlineMiniTools blog
Practical tutorials, explainers, and tips to help you get more from our free utilities, no fluff, no paywall.
Learn how JWT tokens work, what header and payload contain, and how to decode JWT online without exposing secrets. Free JWT decoder guide.
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Capture full pages or visible areas in your browser without extensions. Step-by-step guide to our free online screenshot tool.
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Understand forward and reverse stock splits, how to calculate new shares, cost basis adjustments, and why companies split stock. Free split calculator included.
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Understand state income tax brackets, progressive vs flat rates, no-tax states, deductions, and reciprocity rules. Use our calculator for all 50 states.
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Learn how the spending multiplier works in macroeconomics. Use our calculator to see how initial spending ripples through the economy via MPC and MPS.
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Learn how the X tap and hold PNG trick works: JPEG timeline preview, Load in 4K reveal, checkerboard alpha, and how to make one free in your browser.
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Learn what Cloudflare's Markdown for Agents content negotiation standard is, how Accept: text/markdown works, and how to reduce LLM tokens by 80%.
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Zlib is used in HTTP compression and many APIs. Learn how zlib works and decompress zlib-encoded strings online for free.
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SOAP APIs use XML payloads that are hard to read raw. Learn SOAP basics and format or beautify SOAP XML online with a free formatter.
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Find out how large a GitHub repository is before cloning. Learn what counts toward repo size and check any public repo online for free.
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Need a photo between 50KB and 100KB? This guide explains file size limits, quality settings, and how to compress JPG images online for free.
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Learn how to compress images to 20KB for forms, uploads, and exams. Step-by-step guide with free online tools, no software install needed.
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