Frequently asked questions.

The tools on this site are free to use, with no sign-up. Some advanced features may be paid later.

No. Your browser reads the file and the tool runs in the tab on your device. The site's code is downloaded from the internet, but your documents are not sent to a server.

No. Open a tool, add a file and download the result. There is no sign-up and no email address to give.

No. Deckle never writes over the file you added. Every tool creates a separate result that you download as a new file.

There are 33 tools: merge, split, organise, rotate and crop pages; compress; convert JPG, PNG, HEIC and TIFF to PDF and PDF to JPG, PNG, text, Markdown or CSV; add page numbers, watermarks and signature images; fill and flatten forms; and protect, unlock, redact or remove metadata.

Yes. After a tool finishes, choose another tool and continue with the result. You do not need to download and re-add it. Each step becomes a new version, and the original stays available.

There is no fixed upload limit, because nothing is uploaded. The practical limit is your device's memory. Some tools state their own limits on the page, such as page counts or image pixel sizes, before you start.

Not reliably. The site and each tool's engine must load from the internet first. Once a tool has loaded, the processing itself does not need a connection.

Yes, in a current mobile browser. Large files, high-resolution exports and OCR are slower on a phone, and some image tools use lower pixel limits on devices with less memory.

Deckle reopens the output and measures it before you download: page counts, whether text is still there, whether pages still look the same, whether a password is now required. The result lists what was measured and what could not be. The checks run on your device and are not an independent certification.

The tool works but supports a narrower range of files. Its page lists the limits. Check the result before you rely on it.

In your browser's private storage for this site, so a reload does not lose them. Close a document to delete it, or clear the site's data in your browser settings to remove everything.

No. Unlock PDF removes a password only when you enter the correct one. It does not guess or bypass passwords.

Not directly. Make PDF searchable adds a hidden text layer so you can search and copy from a scan. Deckle does not edit existing page text.