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Guides and tutorials on image conversion, file formats, developer tools and more.
How to Remove Line Breaks, Duplicate Lines and Empty Lines from Text
Text copied from PDFs and emails is full of stray line breaks, duplicates and blank lines. Learn how to clean it up in seconds, and what each option does.
Read more →How to Remove Pages from a PDF (and Reorder Them) — Free & Private
Need to delete a page from a PDF or reorder pages? Learn how page removal works, why it's safe to do in the browser, and how to keep every other page intact.
Read more →Roman Numerals Explained: The 7 Letters and How to Read Any Number
Roman numerals use just seven letters and one clever rule. Learn how to read and write them, the subtractive trick behind IV and IX, and why there's no zero.
Read more →How to Convert SVG to PNG (and Pick the Right Resolution)
An SVG has no fixed pixels, so converting to PNG means choosing a size. Learn how rasterizing works, what resolution to pick, and how to keep it crisp.
Read more →What Is Lorem Ipsum? Why Designers Use Fake Latin Text
Lorem Ipsum is the scrambled Latin placeholder text designers have used for centuries. Here is where it came from, why it works, and when to use it.
Read more →What Is XML? Structure, Well-Formed vs Valid, and XML vs JSON
XML is still everywhere — SVG, RSS, config files, SOAP. Here is how XML is structured, what 'well-formed' really means, and when to prefer JSON.
Read more →AVIF vs WebP vs JPEG: Which Image Format Wins?
A practical head-to-head of AVIF, WebP and JPEG — compression, quality, transparency and support — so you know which to use for photos and for the web.
Read more →Base64 vs URL Encoding: What's the Difference?
Base64 and URL (percent) encoding both turn data into safe text — but for different reasons. Here's what each does, when to use it, and how they combine.
Read more →The Best Image Format for Websites in 2026
Which image format should you use on a website? A quick, practical guide to picking WebP, AVIF, JPG, PNG or SVG for speed, quality and compatibility.
Read more →Common JSON Errors and How to Fix Them
Trailing commas, single quotes, unquoted keys — the handful of mistakes behind most 'invalid JSON' errors, with quick fixes and a free validator.
Read more →How to Compress a PDF That's Too Large
Is your PDF too big to send by email? Learn why PDFs get large, the realistic ways to shrink them, and how to compress one privately in your browser.
Read more →How to Convert HEIC to JPG (Free, No Upload)
iPhones save photos as HEIC, which Windows and many sites cannot open. Convert HEIC to JPG or PNG for free, right in your browser, with nothing uploaded.
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