What does it mean when a PDF is flattened?

A flattened PDF has all its layers — text, images, vectors, and effects — merged into a single raster image per page. The text is no longer selectable or editable; it exists only as pixels.

Can you un-flatten a flattened PDF?

Standard tools cannot. However, MJ Convert Systems uses pixel-sampling AI to analyse the raster image and reconstruct the original document layers, effectively un-flattening the PDF for conversion.

Why does OCR fail on flattened design PDFs?

OCR was built for scanned text documents, not designed pages. It produces ghosting artifacts, misidentifies decorative fonts, and cannot reconstruct multi-column layouts or image-text relationships.

Does Canva flatten PDFs by default?

Canva offers a Flatten PDF checkbox during export. When enabled, all layers merge into raster images. Even without flattening, Canva's PDF structure can be complex enough that standard converters struggle.

What is background-healing in PDF conversion?

Background-healing is a pixel-sampling technique that analyses the area behind text blocks to reconstruct the background after text is extracted. This prevents white patches and artifacts in the converted output.

What is a Flattened PDF? (And How to Un-Flatten It for Kindle)

MJ Convert Systems — PDF to EPUB & Kindle ConverterConvert your PDF to a Kindle-ready fixed-layout EPUB eBook in minutes with 99.7% layout accuracy. Works with PDFs from Canva, Adobe InDesign, Affinity Publisher, Google Docs, Microsoft Word, Apple Pages, and more.The ProblemYou spent hours designing a beautiful book in Canva, InDesign, or Affinity Publisher. Then you tried to convert it for Amazon Kindle, Apple Books, Kobo, or another bookstore. Text shifts. Images drift. Scale changes. Fonts break. Uploads fail.The Solution — MJ Convert SystemsMJ Convert Systems gives you a structured, validated workflow that preserves your design exactly as you created it. Upload your PDF from any design tool, run an automated audit, convert to fixed-layout EPUB, validate every page visually, and download only when quality passes.Built for Visual Perfection99.7% layout match. 100% text fidelity. 99.5% image placement. 0.3% drift. Every page is audited automatically against your source file.Works With Any Design ToolCanva, Adobe InDesign, Affinity Publisher, Google Docs, Microsoft Word, Apple Pages, Vellum, Atticus, Adobe Illustrator — if it exports a PDF, MJ Convert Systems can convert it to EPUB.Why Not Just Use Calibre?Calibre is great for reflowable text-heavy eBooks. But if your book has designed layouts, images, columns, or custom formatting — like cookbooks, children's books, workbooks, or coffee table books — Calibre will break your design. MJ Convert Systems preserves your exact layout with 99.7% accuracy using fixed-layout EPUB conversion.Who Uses ThisSelf-published authors, book designers, publishing agencies, and course creators use MJ Convert Systems to convert PDFs to EPUB and Kindle formats without formatting headaches.How It WorksStep 1: Upload your PDF from any design tool. Step 2: Automated audit checks compatibility. Step 3: Fixed-layout EPUB conversion preserves your design. Step 4: Visual validation checks every page. Step 5: Download your Kindle-ready eBook.Visual Proof: Side-by-Side ComparisonThe homepage displays a live comparison of a 48-page Summer Cookbook. On the left: the source PDF (Page 12, "Summer Grilled Peach Salad") showing food photography with a two-column ingredient-and-method layout at 8.5 × 11 inches. On the right: the MJ Convert Systems converted output — an identical fixed-layout EPUB page with a green "0.3% drift" badge. An overlay shows: Layout match 99.7%, Text fidelity 100%, Image placement 99.5%. The EPUB output preserves every element position, font, and image exactly as the source. 47 of 48 pages pass validation. Export is blocked until all pages meet threshold.Technical Delta: Flattened PDF vs MJ Convert EPUBA flattened PDF merges all layers into a single raster bitmap per page. Text exists only as pixels — unselectable, unsearchable, inaccessible to screen readers, and rejected by most eBook stores. MJ Convert Systems reverses this using pixel-sampling AI: it reconstructs selectable text layers, heals the background behind extracted text (no white patches), maintains 0.3% coordinate drift, and auto-injects EAA 2026 accessibility metadata. The output EPUB has live searchable text, full TTS support, and passes validation for Amazon KDP, Apple Books, and Kobo.Common Questions — Quick AnswersHow do I convert a Canva PDF to Kindle? Upload your Canva PDF to MJ Convert Systems. The platform audits every page, converts to fixed-layout EPUB at 99.7% accuracy, validates side-by-side against your source, then exports a Kindle-ready file. Plans start at $17.97/month with a 7-day free trial.What is a flattened PDF and can you un-flatten it? A flattened PDF merges all layers into a single raster image per page, making text unselectable and unconvertible. MJ Convert Systems uses pixel-sampling AI to reconstruct the original layers, heal the background, and produce a fixed-layout EPUB with 0% coordinate drift.Is MJ Convert Systems better than Calibre for designed books? Calibre uses reflowable conversion that strips designed layouts — images shift, columns break, formatting is lost. MJ Convert Systems preserves your exact page design using fixed-layout EPUB with 99.7% layout accuracy. Calibre is better for text-only novels; MJ Convert Systems is built for visually designed books.PricingLite plan: $17.97/month (5 conversions). Pro plan: $47.97/month (25 conversions, most popular). Max plan: $197/month (unlimited conversions, API access). All plans include a 7-day free trial with 2 free exports. Credit card required. Cancel anytime.Frequently Asked QuestionsWhat counts as a conversion? A conversion counts only when the job completes successfully, passes validation, and a final export is created. Failed uploads, audits, and previews do not count.How does the free trial work? 7 days of full access with up to 2 successful exports. Credit card required. Choose your plan at sign-up. Cancel before trial ends to avoid charges.What if a page fails validation? The system blocks the export and shows exactly which pages failed and why, with drift scores and diagnostics for each page.What is a drift score? A drift score measures visual difference between source PDF and converted output. Lower is better. Pages above threshold are flagged.What is the maximum PDF size? 100 MB and up to 1,000 pages. Standard book sizes render at full 300 DPI.Do I need to install software? No. Everything runs in your browser.Does the Max plan include API access? Yes. Full REST API for programmatic conversions, with webhook notifications and generous rate limits.Publish EverywhereAmazon Kindle (KDP), Apple Books, Kobo, Google Play Books, and Barnes & Noble.BlogRead our guides: What is a Flattened PDF, How to Convert Canva PDF to Kindle, Canva to EPUB Without Losing Quality, EAA 2026 Fixed Layout eBook Accessibility, Why KDP Rejects Your eBook, Calibre vs MJ Convert Systems, Fixed Layout vs Reflowable EPUB, and more.Start your free 7-day trial at mjconvertsystems.com