Free Flatten PDF
Inspect and flatten fields, annotations, layers, or complete pages with vector-safe, pixel-lock, page-range, and batch controls. Your upload uses encrypted durable storage when available and a private same-origin processor otherwise. Temporary sources are deleted after each attempt; durable checked results remain recoverable in this browser for up to six hours.
Choose PDF files
Drop files here, or choose them from your device.
Sign in to save and reopen documentsNo artificial page or file-size limits · resumable encrypted upload · automatic deletionHow it works
- Choose one or more PDFs or use the local interactive sample, then review fields, comments, links, attachments, layers, and active content before upload
- Flatten only form fields, lock all visible interactivity into a selectable vector-safe copy, or pixel-lock complete pages at 100–300 DPI
- Apply pixel locking to every page or an exact range, set the PDF or batch ZIP name, and protect certificate signatures by using an unsigned copy
- Download only after every result is reopened, page-counted, rendered, structurally inspected, and packaged with an audit report for a batch
Short-lived by design
This tool uses open-source processors in a private temporary workspace that is deleted after each attempt. When durable storage is available, uploads are encrypted and resumable and checked results stay recoverable to this browser for up to six hours. If that storage is unavailable, the same-origin fallback returns the checked result directly. Failed or cancelled job files are removed immediately. Account storage is used only when you explicitly choose Save to Bookify.
