Mimimetr

Cross-stitch · Diamond painting · Sewing · Knitting · any PDF

Free protection for your digital files against theft and unauthorised sharing

You came up with the idea, did the work and checked every little detail — only to find your file in someone else’s channel: “Help yourself — it’s free!” Someone else is gaining followers and earning ad revenue from your hard work. How generous. At your expense.

Mimimetr helps you trace that copy back to the buyer it was made for. Before sending your file, you create a copy with its own invisible mark for each of your buyers — in just two clicks. Found your work being shared without permission? Upload the file or a screenshot. If the mark is readable, you can find out who bought that particular copy. Free — and no detective training required.

Mark a file Check a leaked file

Everything runs in your browser. Your files and buyer list are never uploaded anywhere.

Who Mimimetr is for

The tools are free and run in your browser. Pick your craft.

The tool

Upload a PDF or image (JPG, PNG, WEBP) and enter the buyer's name or handle to create their copy with a hidden mark. You can also add a visible line.

Quick start
  1. Select a PDF or image, or drop it into the “Mark” tab.
  2. Enter the buyer's name or handle and, if needed, the order number.
  3. Click “Create personal copy” — the download starts automatically.
  4. Send exactly this file to the buyer.
or drop it here
Advanced
Hidden marks The name isn't visible on the page, but it is stored inside the file. Someone with the right tools could extract it. If the file looks like a cross-stitch chart, the marks on chart and legend pages go only into the margins: no microtext, and the invisible text and footer stay outside the grid and legend rows. That way apps like Pattern Keeper read the chart just as without the mark. The pattern layer and metadata work as usual.

Upload the PDF or image you found, or a screenshot or photo of a page. The tool checks each marking layer.

Upload the whole page or at least with its margins: a cut-out of bare cells cannot be read. If you only have a fragment, ask for the full file or find the full page.

or drop it here

Copyright infringement notice template. This is not legal advice — review the text before sending.

This template follows the structure of Art. 16(2) of EU Regulation 2022/2065 (DSA) and common DMCA requirements. It is not a legal assessment of your case. Check the form links — platforms change them. Only submit accurate information: false notices can have consequences.

Back up your buyer list

This list is stored only in this browser. Save a backup once a week and keep it somewhere safe — email it to yourself or save it to your cloud drive.

The “ID → buyer” list is stored only in this browser.

How it works

  1. 1 Create a copy for a specific buyer

    Click “Choose a file” and select your PDF or image. On a computer, you can also drag the file into this box. In the “Buyer” field, enter the buyer's name or handle. Then click “Create personal copy”. Mimimetr adds an invisible mark, and the file starts downloading automatically. If a save window opens, choose a folder and click “Save”. Done — this buyer's copy is ready, complete with an invisible signature.

  2. 2 Send the buyer the downloaded file

    This file already contains the buyer's personal mark. Send it via Telegram, Instagram or email. Just don't mix it up with the unmarked original. The buyer's details are saved under “My buyers”. For the next buyer, select the original again and create a new copy with their name. Each buyer gets their own — like a named mug in the office kitchen.

  3. 3 Found your work in someone else's channel? Check the copy

    Save the file you found, or take a screenshot or photo of the page. Open Mimimetr in the browser you used to create the copies. A PDF can also be checked in another browser if it still contains the buyer's details. Go to the “Check a copy” tab, choose the file and click “Check”. If the mark is readable, you'll see who you sold that copy to. Photos should be sharp and free of glare — Mimi the squirrel has sharp eyes, but she isn't a magician. To ask for the post to be removed, use the “Complaint” tab to prepare the text.

New: a chart from a photo

A free tool for stitchers: a photo becomes a cross-stitch chart with DMC threads, a symbol grid, a legend and a print-ready PDF. In your browser, no uploads.

Make a chart

Found a shared copy. What next?

Common questions

Will this stop leaks?

No — the file can still be forwarded. But each copy has its own mark. If it's readable, you can see who you sold that copy to, then contact the buyer or report the post. The visible “Licensed to …” line also reminds buyers that the copy has their name on it.

Can I mark images as well as PDFs?

Yes: JPG, PNG and WEBP — illustrations, prints, stickers and photos. The same hidden pattern is added to create a personal copy. On very dark images, the pattern can be hard to read, so you may want to add a visible line too.

Where do my files go?

Nowhere. Everything is processed in your browser, on your computer or phone. The page is set up to block outgoing data requests. Your files are not sent to a server.

What if someone takes a screenshot or a photo of the screen?

The main hidden mark is an almost invisible pattern across the page. It usually survives screenshots, Telegram compression, cropping, rotation and phone photos. The image needs to be reasonably sharp: blur or strong glare can make the mark unreadable.

Is the mark visible? Will it spoil my chart?

At the default “medium” setting, the pattern looks like a barely noticeable warm tint on the page. Colours, lines and symbols remain clear. The “high” setting gives a more visible texture for printing. Check the finished copy before sending it.

What if the buyer prints and scans the file?

A colour scan usually preserves the mark. Scanner apps that turn pages into pure black and white can erase the pattern. If you added a visible line with the buyer's name, it may still help — unless it was cropped out.

Where is my buyer list stored?

Only in this browser, on this computer or phone. Clearing the site's data deletes the list; it won't appear automatically on another computer. Click “Save a backup” once a week to save a file you can import later. If you enable the option to store the buyer's name inside the file, a PDF or image can also be checked elsewhere without the list. For screenshots and photos, you need the list.

Is this legal protection?

No, and this is not legal advice. The tool helps you identify a buyer's copy and fill in a copyright complaint template. The platform decides whether to remove the content.

About the project

Mimimetr is for people who sell their own digital files — illustrations, prints, craft patterns, planners and more — on Telegram, Instagram or their own website. We don't see your files or buyer list. The tool is free.

Mimi is an embroidering squirrel, the Mimimetr mascot. The tools are built by a team; Mimi is only there to remind you that crafts are a joy. She does not pretend to be human and never writes on her own: in the Telegram channel our team writes on her behalf.

Privacy

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