Files & images: tools, guides and useful answers
Transform files without complicated steps. Tools, guides and questions help you convert, compress, resize and prepare images.
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Tools & Calculators
Use the tools linked to this category right away.
Crop an image
Crop your photos and images in a few clicks: preset ratios for Instagram (1:1, 4:5), Stories / TikTok / Reels (9:16), YouTube (16:9), portrait (2:3) or custom ratio. Circular avatar mode, rotation, rule of thirds grid and safe zone. 100% in your browser, fast and private.
Expert Image Compressor
Compress JPG, PNG, WebP in batch with a multi-threaded engine (Web Workers). Quality or target-size mode (binary search), HD ×10 loupe and ZIP export. 100% browser.
PDF to Markdown converter for AI
Convert your PDFs into clean Markdown, ready to paste into ChatGPT, Claude or your AI agents. Rebuilds headings, tables and lists, local OCR for scanned pages, image extraction — all in your browser, with no server upload.
PDF Organizer
Merge PDFs, move, rotate, duplicate or remove pages. Visual previews, undo and PDF or ZIP export. Free, no account, processed on your device.
Add a watermark to images
Add text or a logo to your photos, individually or in batches. Tiling, preview and PNG, JPG, WebP or ZIP export. Free, no account needed, in your browser.
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11 tools
Guides & Tutorials
Understand the basics before taking action.
DPI vs PPI: A Practical Guide for Print-Ready Images
Learn how to convert between DPI, pixels, and centimeters to prepare print-ready images. A practical guide with real examples for e-commerce and design.
Resize an image without distortion
A practical guide to choosing the right image dimensions, keeping the aspect ratio and preparing lighter web files.
Convert HEIC to JPG: Why It Fails and How to Fix It Fast
Received a HEIC file you can’t open? Learn why this format causes issues and how to convert it to JPG in seconds, without installing anything.
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Practical questions
Find a short answer to common questions.