⌘ K
watermark · text · image · 9 anchors · local

Overlay watermarks on photos

Add a text or image watermark at any of nine anchor positions with full control over size, color, and opacity. Output PNG or JPEG.

Watermark Adder
Source
—
no file
Output
—
—
Anchor
br
position
Status
idle
live
Format
Opacity0.70
input · image

image/* · runs locally · nothing uploaded

output · preview
Preview appears here
Quick Start

How it works

Pick an image, tune the options, then download the result. Everything runs in your browser.

  1. 01

    Pick a photo

    Drop or choose any common raster image.

    Files stay in memory as an HTMLImageElement — the original bytes are never uploaded, and EXIF metadata is preserved until you explicitly transform it.

    inputuploadcanvaslocaldecode
    input · bytesimage · loaded
    photo.jpg
    loaded · decodedcanvas · ready
  2. 02

    Type text or upload logo

    Type a watermark or upload a logo PNG. Logos win if both are provided.

    Encoder quality is exposed where the format supports it — JPEG and WebP get a 0–1 quality slider; PNG is lossless. Options re-render the canvas immediately.

    watermarkoptionslive previewencoderquality
    wm · tunabletext · img · live
    © brand
    options applied · liveencoder · live
  3. 03

    Pick anchor + opacity

    9-point anchor grid, plus font size, color, and opacity sliders.

    Pixel work runs on the Canvas 2D context — drawImage resamples with the browser’s bilinear filter and getImageData/putImageData back per-pixel passes.

    stylerenderCanvas 2Dpreviewpx-perfect
    anchor · resampledbr · px-perfect
    tl · tc · tr ...
    preview · livepx-perfect
  4. 04

    Download

    Save as PNG (transparency) or JPEG (compact).

    Downloads ship via a hidden anchor with an object URL — no server round-trip, and the file on disk is untouched. The output filename inherits a sensible suffix.

    exportdownloadblobclient-sideobject URL
    ok · blobready · saved
    watermark.png
    shipped · ready to shipsuccess
Pro tips

Browser-only image work that scales

Convert with quality control

JPEG/WebP let you pick a 0–1 quality. Default 0.92 is a good compromise of size and visible quality.

PNG isn’t free

Use PNG only for transparency or sharp edges. For photos, WebP is smaller at the same perceived quality.

Strip EXIF for privacy

Photo EXIF often contains GPS, camera model, and timestamps. Strip before sharing public uploads.

Watch the colour profile

Convert to sRGB before web export. Wide-gamut images render oversaturated in non-managed browsers.

AVIF when it’s available

AVIF beats WebP on size at the same quality. Detect support via <picture> with fallbacks.

Lazy-load below the fold

Add loading="lazy" on <img>. The browser handles scheduling — no IntersectionObserver needed.

Related toolsImage BorderBrightnessDuotoneImage ResizerImage CompressorImage Stitcher
Use Cases

When to use this tool

Common workflows it speeds up.

Photo copyright

Stamp your name across portfolio images. Decoded into a Canvas 2D context — original bytes never leave the tab, so you can process customer-uploaded photos, internal screenshots, or sensitive diagrams without privacy concerns.

px-perfect

Brand assets

Add a logo before posting on social platforms. Encoders expose quality 0–1 where the format supports it (JPEG, WebP); PNG and AVIF stay perceptually lossless. Pick 0.85 for web, 0.95 for archival, 0.7 for thumbnails.

quality-tunable

Proof previews

Watermark client previews until they pay. Pair with the EXIF Stripper before sharing user-uploaded photos publicly. Camera serial numbers, GPS coordinates, and timestamps often hide in image metadata and leak more than the picture itself.

format-aware

Screenshot attribution

Add source credit to recommended images. Output preserves colour profile (sRGB) so it renders consistently across browsers, monitors, and print pipelines. Wide-gamut workflows can opt into Display P3 for modern Apple devices.

EXIF-safe

Limited-time drops

Stamp the date or event name on assets. Re-runs only on option changes, never on window resize, so the canvas stays responsive on large images. drawImage uses the browser's bilinear filter for fast resampling.

client-side

Bulk consistency

Apply the same anchor and opacity across many images. Downloads as .png, .jpg, .webp, or .avif with the correct MIME so editors apply native handling on save. The filename inherits a sensible suffix derived from the input.

compression-ready
FAQ

Frequently asked questions

Yes — upload a second image (e.g. a logo PNG) and it will be placed at the chosen anchor with the chosen opacity.
Pick from nine anchor positions: top/middle/bottom × left/center/right. Padding scales with the image size.
No — the tool produces a new file you can download. The original on your disk is untouched.
PNG keeps any transparency in your source; JPEG is smaller but flattens transparent areas.
No. Everything runs locally in your browser.
Suggest a tool

Something missing?

Tell us what you need. We ship the top requests every two weeks.

Sent straight to the maintainers · no account needed
47 in queue·8 shipped this month
Request queued. Thanks!