Annotate and Mark Up PDFs Online
Highlighters, pens, shapes and comment boxes turn a static PDF into a working document. A practical guide to marking up PDFs cleanly (and legibly) in the
Guides, tips and updates on the tools you use every day: page 9 of 21.
Highlighters, pens, shapes and comment boxes turn a static PDF into a working document. A practical guide to marking up PDFs cleanly (and legibly) in the
Pull the audio out of any video and save it as an MP3. A clear guide to how audio extraction works, choosing a format and quality, and doing it privately in your browser.
An honest guide to fixing blurry and pixelated photos: what sharpening and upscaling can actually recover, what they can't, and the realistic steps that help.
A scanned PDF is just a picture of a page. You can't search or select it. The steps OCR adds a hidden text layer so Ctrl+F finally works, all in your browser.
Compare PNG, JPG, WebP and AVIF on transparency, quality, file size and browser support. A clear decision table plus how to convert to the right format.
EPUB is the open standard behind most ebooks. Learn what an EPUB file actually is, why it reflows to fit any screen, how to open one, and how to convert EPUB to PDF.
In-browser tools are private by default, instant to use and work on any device. A builder's view of why client-side utilities are becoming the standard. With the actual technology that makes it possible.
What Base64 actually does, why it exists, how the encoding works, and the right times to use it, including data URIs, email attachments and embedding files.
What lossy and lossless compression really do to your files, with concrete JPEG, PNG and WebP examples, plus a simple way to choose the right one every time.
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