Engine v4.0 Active

Capture the whole story.
Zero seams.

Every seam is pixel-checked before it's stitched in — so your full-page screenshot looks exactly like the page did.

Add to Chrome — Free View Sample Capture →
⚠️

You've seen this before: a screenshot with a header pasted in twice, or a sentence sliced clean in half.

Every "full page" tool scrolls, snaps, and hopes the pieces line up — and half the time they don't. SeamShot checks every overlap pixel-by-pixel and re-shoots it automatically if it's off, before it ever reaches your image. That's the Overlap Logic behind SeamShot.

Core Technology

Pixel-Perfect Overlap Stitching

SeamShot captures overlapping slices and cross-checks every pixel where they meet. If two slices don't line up, it recaptures automatically — so the seam disappears instead of showing up in your screenshot.

  • Sub-pixel alignment correction
  • Dynamic scroll delay handling
  • Sticky element auto-detection
SLICE_A_001.JPG
VERIFYING OVERLAP... 99.9% MATCH
SLICE_A_002.JPG
SLICE_A_003.JPG
[SYSTEM] Seam Verification: Frame 01 & 02 synchronized.
Monitor: example.com/store
Active
Next check: 02:15m
$699.00
Detected Change in
New Category

The background watcher.

Register a URL to periodically auto-recapture and get notified when it changes. Track a price, a job listing, or any page you care about — even with the tab closed.

Compare Reports

Capture the same page at different times. We generate a visual diff highlighting changed regions and a text diff for content changes.

SHA-256 Hash Stamp

For legal and QA professionals. Every screenshot is stamped with a tamper-proof hash, timestamp, and URL metadata.

f7e3c1...8a92b

Change History Log

Every change a watch detects gets logged with a timestamp and a plain-text summary — a running record of when a page actually changed, not just a "last checked" time.

Text-Selectable PDF

Not just an image. Export your full-page capture as a vector PDF where every word remains searchable and selectable.

Why SeamShot

One extension, five things a plain screenshot tool doesn't do.

Frequently asked questions

Is SeamShot free?

Yes, SeamShot is free on the Chrome Web Store with no account required.

Does SeamShot upload my screenshots anywhere?

No. Captures, comparisons, and watch history are processed and stored entirely on your device — nothing is uploaded to any server.

How is this different from a normal full-page screenshot extension?

Most full-page screenshot tools scroll and stitch blind, hoping the seams line up. SeamShot checks each overlapping region pixel-by-pixel as it captures, and retries automatically if a seam doesn't match — so you don't end up with a duplicated header or a torn image.

Can I export as a PDF with selectable text?

Yes. Alongside PNG and clipboard copy, SeamShot can export a vector PDF where the text stays searchable and selectable, not flattened into an image.

Can it tell me when a page changes?

Yes — point SeamShot's watch feature at a page or a single element and it re-checks on a schedule you set, running in the background even with the tab closed, and sends a desktop notification when something changes.

Ready for a capture that actually lines up?

Install SeamShot and capture your first full page in under a minute.

Add to Chrome — It's Free
No account required • Runs entirely on your device