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Guides, tips, and tutorials for our free online tools.
A practical comparison of WebP, PNG, and JPEG image formats. Learn when to use each, real file size numbers, and how to convert between them for free — no upload required.
Learn how to combine AI writing tools with Markdown to create clear, maintainable documentation. Faster drafts, cleaner formatting, and docs your team will actually read.
Learn how to reduce PDF file size without sacrificing quality. Compare lossless vs lossy compression, and use our free browser-based tool — no upload, no sign-up.
Remove image backgrounds instantly with AI. 100% free, no sign-up, all processing runs locally in your browser. Compare browser-based AI vs paid tools like remove.bg.
Learn how to split PDFs into individual pages, extract specific page ranges, and merge multiple PDFs into one document. Free, browser-based, no uploads required.
Your README is your project's front door. Learn how to write a README that gets your project used and contributed to — with templates, examples, and AI-assisted workflows.
Turn Markdown text into professional PowerPoint presentations in seconds. Convert ChatGPT and Claude outputs into PPTX slides — no sign-up, no upload, free.
ChatGPT gives great answers but messy formatting? Learn how to fix broken headings, scattered code blocks, misaligned tables, and extra whitespace. Free online tool included.
Learn how to write technical documentation in Markdown: READMEs, API docs, knowledge bases, and more. Includes AI workflows — use ChatGPT/Claude to generate content, then export to HTML, PDF, or Word.
The ultimate Markdown syntax reference. Headings, bold, italic, lists, tables, code blocks, links, images, footnotes, emoji — every command with examples. Printable PDF included.
Markdown is fast and future-proof. WYSIWYG is visual and intuitive. Here's when to use each, and how they compare in 2026.
Instagram prefers JPEG. Pinterest loves vertical PNGs. Twitter needs small file sizes. Here's the exact format, size, and compression settings for every platform.
Need to turn PDF pages into images? Convert PDF to JPG or PNG for free, right in your browser — no uploads, no sign-up.
Save AI chat outputs as professional Word documents or PDFs. Turn ChatGPT and Claude Markdown into DOCX or PDF in seconds — no sign-up, no upload.
Learn how to compress images for the web without killing quality. Covers JPEG, PNG, WebP, AVIF, responsive images, lazy loading, and Core Web Vitals optimization.
Need to export Markdown to HTML, Word, or PDF? Learn 5 conversion methods using free browser-based tools. No sign-up, no upload required.
Should you compress images in your browser or use desktop software? Compare speed, quality, privacy, and cost to make the right choice for your workflow.
Learn how to generate QR codes for URLs, WiFi passwords, text, emails, and contact cards — all free, no sign-up, no software download required.
Confused about image formats? Compare WebP, PNG, JPEG, and AVIF — learn when to use each for web, print, and sharing.
PDF too large to email or upload? Compress it for free in your browser — no sign-up, no file uploads.
Need to convert a file but don't have the right software? Here's your complete guide to free online file conversion.
Learn how to convert HEIC photos from your iPhone to universally compatible JPG format — for free, in your browser, with no uploads.
PNG files are large. Learn when to convert PNG to JPG, how to do it for free, and how to keep the quality.
WebP is great for the web but not every app supports it. Convert WebP to JPG instantly in your browser — free, no uploads.
Struggling with Markdown tables? Learn the syntax, alignment tricks, and use our free visual table builder.
Need just a few pages from a large PDF? Extract them for free, no software needed. Works right in your browser.
Crop, resize, compress, and convert images — all for free, no uploads required. Works entirely in your browser.
Instagram crops and compresses your photos. Here are the exact dimensions you need and how to resize images for free.
Staring at a wall of minified JSON? Learn how to format, validate, and debug JSON with free online tools.
Markdown or HTML? Compare the two for documentation, blogging, AI prompts, and web development. Pros, cons, and when to use each.
The best free online tools for images, PDFs, Markdown, and coding. No sign-ups, no uploads, all browser-based.
What is Base64, how does it work, and when should you use it? Learn the basics and try our free encoder/decoder.
What are UUIDs, why do developers use them, and how to generate them for free. UUID v1 vs v4 explained.
Markdown is the universal language of AI, developers, and writers. Learn what it is, why it matters, and how to use it.
Learn the best techniques to reduce image file sizes while maintaining visual quality. Free online tools and pro tips.
Need to combine multiple PDFs into one document? Here's how to merge PDF files for free, right in your browser.
Staring at a wall of unformatted JSON? Learn how to beautify, validate, and debug JSON with free online tools.