Guides
Practical guides for files you actually work with.
Format comparisons, compression targets, and step-by-step PDF and document workflows — each guide answers a real question with concrete numbers and a repeatable process, then links to the tool that does the job.
These are the questions that reach us through the contact form and that we hit ourselves while building and testing the converters: which format survives email, why a scan comes out sideways, where quality is actually lost when an image shrinks. Each guide is written by the team that maintains the tools, organized the way the work happens — decide, do, verify — and reviewed when the formats underneath change. Every article shows when it was published and when it was last updated, so you can judge for yourself how current the advice is.
Nothing here is sponsored or ranked by partnership: the recommendations are the ones we use in our own workflows. If a guide sent you here and the tool does not cover your case yet, tell us — missing cases become the next guide.
Image formats & optimization
Which format to pick, how far compression can go, and how to fix the files your phone or camera gave you.
PNG vs JPG vs WEBP vs AVIF
Which image format to use, when — an honest comparison of the four formats the web runs on.
Updated
Read guideWhat is AVIF?
Where AVIF’s real savings come from, where it still loses, and how to convert and serve it safely.
Updated
Read guideCompress images for the web
Practical steps and target sizes for making pages fast without visible quality loss.
Updated
Read guideConvert HEIC to JPG
Get iPhone photos onto Windows, Android, and the web without the "unsupported format" error.
Updated
Read guideMake a favicon from a PNG
Turn any logo or image into a multi-size ICO favicon in under a minute.
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Read guidePDF workflows
Everyday document surgery — combining, extracting, and reorienting pages without re-rendering or degrading them.
Reduce a PDF file size
Ranked fixes for oversized PDFs: remove pages, downsample images, re-export smart — without losing text quality.
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Read guideMerge PDFs
Combine contracts, scans, and chapters into a single clean document — plus when not to.
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Read guideSplit a PDF
Extract chapters, pages, or ranges into standalone PDFs without installing software.
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Read guideRotate PDF pages
Fix sideways scans and mixed-orientation documents so every page reads correctly.
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Read guideDocuments & publishing
Turning working formats into shareable ones, with the fidelity pitfalls that quietly ruin exports.