10 guides · English
Guides: how these tools actually work
Step-by-step instructions for the jobs people arrive with — merging a signed contract, shrinking a photo for an application form, checking a download. Each guide links straight to the tool it describes.
How to merge PDF files without uploading them
Combine several PDFs into one document, in the order you choose, entirely in your browser. No upload, no account, no page limit.
9 November 20262 min readRead the guide →
How to split a PDF: extract a page range or one file per page
Pull out the pages you need from a PDF, or turn a document into one file per page — locally, without uploading it.
9 November 20262 min readRead the guide →
How to compress an image without losing visible quality
Re-encode a JPEG, PNG or WebP at a quality you choose, with the before and after size side by side. Runs in your browser.
9 November 20262 min readRead the guide →
JPG, PNG, WebP or AVIF: which format, and how to convert
What each image format is actually good at, and how to convert between them in your browser with the encoder you already have.
9 November 20262 min readRead the guide →
How to resize a photo for an online form and get under the size limit
Passport photos, visa applications and job portals all want exact pixels and kilobytes. Here is how to hit both without a photo editor.
9 November 20262 min readRead the guide →
How to copy text out of a photo or a scan, with OCR on your device
Turn a picture of a page into selectable text with an OCR engine that runs in your browser. Nothing is uploaded.
9 November 20262 min readRead the guide →
How to remove a photo background and get a transparent PNG
Cut the subject out of a portrait or product shot with a segmentation model that runs on your own device. No upload.
9 November 20262 min readRead the guide →
How to check a download is genuine with a SHA-256 hash
Compare a file’s fingerprint with the published checksum in your browser. The file never leaves your device — which is the point.
9 November 20262 min readRead the guide →
How to make a QR code for a link, Wi-Fi or contact card
Generate a QR code as PNG or SVG in your browser, with the size and error correction you need. Nothing is uploaded.
9 November 20262 min readRead the guide →
Why these tools never upload your files, and how to check
The difference between “we delete your file” and “your file was never sent” is the whole argument. Here is how to verify it yourself.
9 November 20263 min readRead the guide →
These guides are written in English. The tool interface is available in every language the site supports — use the language menu to switch.