The Gumake tools
A free toolbox for authors and creators — the lightest tools run in your browser, image processing runs on our server in France (files deleted after 72 h).
Publishing (books)
Self-publishing: publish your book yourself
Turn your manuscript into a publish-ready book — interior PDF, cover and ePub — without overpriced services. Works with Amazon KDP, Kobo, BoD…
Create a poster & social media banner
Design posters and banners at the exact dimensions of every social platform.
Paginated book preview at print size
See exactly how your text flows into pages at your trim size — works with Amazon KDP and other platforms.
Choose your book's trim size, paper and finish
Based on your genre and length, get the ideal trim size, paper and finish — compatible with KDP and beyond.
KDP calculator: spine, printing cost & royalties
Work out your spine width, full-cover dimensions, printing cost and Amazon KDP royalties, per marketplace.
Amazon KDP keyword research
Find long-tail keywords readers actually type on Amazon for your book listing — the affordable alternative to $199 Publisher Rocket.
3D book cover mockup & merchandise
Project your cover onto a 3D book, a screen or an e-reader — or your artwork onto a mug, t-shirt or pen — then export as HD PNG, no software needed.
Generate your exact Amazon KDP cover template
Calculated spine, bleed, safety margins and barcode zone — mm + inch measurements, SVG & PNG export.
KDP book cover cropper
Crop your artwork to exact KDP dimensions (spine, bleed, margins, barcode), 300 DPI PNG export with no guides baked in.
Studio — layout & composition editor
Compose text, images and shapes (Canva-style), 100% in your browser, no GPU required.
Image
Remove the background & vectorize a logo
Strip the background and turn your logo into a crisp SVG that scales to any size.
Compress an image online
Shrink your JPG, PNG and WebP files with no visible quality loss — processed on our server in France.
Upscale an image without pixelation (AI)
Boost image resolution ×2 or ×4 with AI (Real-ESRGAN) on our servers — an AI feature (Gu tokens), perfect for turning a cover into 300 DPI print quality.
Create a profile picture
Crop, cut out and frame your profile photo (round or square), HD PNG export.
Convert an image (PNG, JPG, WebP)
Convert images between PNG, JPG and WebP, in batches — processed on our server in France.
Custom QR code generator
Shapes, palette, logo, text and a book-ready card. SVG & HD PNG export. Pure QR, no redirect or tracker.
Remove EXIF metadata from a photo
Strip the hidden GPS location, camera model and date from your JPEG photos — losslessly.
Text & writing
Extract text from an image
Turn photos, scans and screenshots into editable text in seconds.
Find a brand name & its domain
Generate pronounceable brand names and check domain availability as you go.
Live Markdown preview
Write Markdown and watch the rendered HTML update in real time, .html export.
Word counter
Count words and characters and estimate how many pages your text will fill.
Fancy text generator for social media
Bold, italic, strikethrough, cursive, small caps… text that keeps its style in Instagram, LinkedIn, X and Facebook bios and posts, with a per-platform character counter.
Ready to publish a complete book on Amazon KDP?
Discover Gumake