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Stamp a repeating, semi-transparent text watermark diagonally across an image — the classic proof and preview protection for photographers, designers and marketplace sellers. Your text, tiled at an angle, delivered as a clean PNG.
On ConvertFormat the matrix is the interface: the Add Watermark to Image is organised by the format you have and the format you need, because "change the format" is the whole job description — pick the pair, convert once, from the best original you have.
100% freeNo sign-upNo watermarkFiles auto-deletedWorks on any device
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Tap to choose a file or drag & drop it here
Image files · deleted right after processing
A short ad is shown before processing — it keeps this tool free. No sign-up, no watermark.
Upload your file — drag & drop it or tap to browse.
Set any options, then hit the button.
Watch the short ad — your finished file downloads instantly.
Why people pick this over other converters
No account, ever. Most big converter sites push sign-ups and paid tiers for basic jobs. Here the tool just works.
No watermarks and no job counters on standard tools — fair-use rate limits keep things fast for everyone — and a generous 200 MB upload limit.
Private by design: your file is processed in a temporary folder and deleted the moment your download finishes. Nothing is stored or shared.
Fast: this page is a fraction of the size of the ad-heavy alternatives, and the same account-free toolbox has 386 other tools when you need them.
FAQ
Can the watermark be removed?
A visible tiled watermark is a deterrent, not encryption — it makes casual reuse obviously stolen and awkward to crop out. For real proofing, watermark a copy and keep your original private.
Is this really free?
Yes — completely. A short ad before processing keeps every tool free; no account, subscription or credits are ever required.
What happens to my file?
It is processed in a temporary folder and deleted the moment your download finishes. We never store, view or share uploads.
Do I need to install anything?
No. Everything runs in your browser session against our servers — any phone, tablet or computer works.
