Say exactly what it is for
Job applications, bank accounts, condo rentals and SIM registrations all ask for ID copies. Pick the purpose, name the recipient and add the date (Buddhist Era for Thai text, for example 29 Sep 2569). The watermark covers the whole picture so the copy is harder to reuse.
Cross-out and covering are burned in
Cover boxes are burned into the image pixels, not a layer that can be removed later. The staggered diagonal rows run across the entire card, so cropping still leaves watermark behind, unlike hand cross-outs that leave gaps.
Real-size, print-ready PDF
You get an A4 PDF with front and back at the real 85.6 × 54 mm size, ready to print at 100%. Or download a JPG/PNG per side for chat apps and upload forms. Files are rebuilt from scratch, so no EXIF or GPS data is carried over.
Why watermark an ID card copy?
A plain copy of an ID card can be reused by anyone who gets it. In Thailand people write “for … only” with a date across the copy. This tool does it the same way every time, in a form that is much harder to remove than handwriting.
Does the watermark fully prevent misuse?
No. It makes reuse for another purpose harder and records what the copy was issued for and when. Send copies only through trusted channels and cover details the recipient does not need.
How do I mark a “certified true copy”?
The usual practice is to write “certified true copy”, sign and date it on the copy itself. Turn on step 4 to add the text, a typed or drawn signature and a printed name. If the recipient has specific rules, follow theirs.
How should the copy be crossed out so it is safe?
Cover the whole card, including the photo, the ID number and the background, and leave no large gap that survives cropping. The tool lays staggered diagonal rows over the entire picture; choose Dense for the hardest result to crop out.
Which details on a Thai ID card can be covered?
Religion and blood type (when printed) are rarely needed to apply for a job or open an account, and neither is the back-of-card Laser ID that some services use to verify identity. Use the “Cover details” mode to draw black boxes. Do not cover what the recipient genuinely needs, such as the ID number and name.
Are my photos uploaded anywhere?
No. Photos are read and edited in your browser on your own device. No image or PDF content is sent to any server. Closing the tab discards everything.
Does the output still contain GPS or EXIF data?
No. Every picture is redrawn through a canvas and saved as a new file, so location, camera model and time stamps from the original are not carried over.