Skip to content
SPECIFICTION
Get listed

SnapDiff

snapdiff.ai

From $19/mo Free plan WebAPI
Visit snapdiff.ai
Spec score 7.8 #16 of 26 in Visual Regression Testing Software

What it is

SnapDiff captures web pages and compares screenshots pixel by pixel to identify visual regressions. Its HTTP API can compare two URLs without a test suite or CI/CD pipeline, and each diff returns a percentage, a highlighted image, and bounding boxes around changed regions. A GitHub Action runs visual checks on pull requests and can discover Vercel preview URLs. For scheduled monitoring, the watch API checks URLs on a cron schedule and sends webhooks when changes exceed a threshold. Comparisons use pixelmatch with antialiasing detection, configurable thresholds, ignore regions, and CSS selector masking. SnapDiff accepts HTTPS preview, staging, Storybook, and deployment URLs, including those on Vercel, Netlify, and Cloudflare Pages. Its MCP server supports Claude Code, Cursor, Windsurf, and other MCP clients for verifying UI changes. The service says it hides more than 40 cookie banners and 20 chat widgets and blocks more than 30 ad and tracker domains during capture. Free includes 200 diffs and 2,000 screenshots per month; paid plans start with Dev at $19 a month. Screenshots and diff images are retained during a subscription and for 30 days afterward.

Spec sheet

Purpose
SnapDiff captures web pages and compares screenshots pixel by pixel to detect visual regressions.Read 7 Oct 2026 · snapdiff.ai
Security
The privacy policy states traffic uses TLS 1.2+, API keys are stored as hashes, and sensitive integration credentials are encrypted at rest.Read 7 Oct 2026 · snapdiff.ai
Support
The contact form says SnapDiff will respond to questions, feedback, or enterprise pricing inquiries within one business day.Read 7 Oct 2026 · snapdiff.ai
Headquarters
Sacramento, California, United StatesRead 28 Sep 2026 · snapdiff.ai
Maker
SnapDiff is operated by Corra LLC, a California limited liability company with a registered address in Sacramento, California.Read 7 Oct 2026 · snapdiff.ai
AI tools
The MCP server supports Claude Code, Cursor, Windsurf, and other MCP clients for verifying UI changes.Read 7 Oct 2026 · snapdiff.ai
Capture cleanup
The service says it auto-hides 40+ cookie banners and 20+ chat widgets and blocks 30+ ad and tracker domains during capture.Read 7 Oct 2026 · snapdiff.ai
CI integration
Its GitHub Action runs visual checks on pull requests and can discover Vercel preview URLs automatically.Read 7 Oct 2026 · snapdiff.ai
Comparison controls
Comparison uses pixelmatch with antialiasing detection, configurable thresholds, ignore regions, and CSS selector masking.Read 7 Oct 2026 · snapdiff.ai
Data retention
Screenshots and diff images are retained during the subscription and for 30 days afterward, then deleted from object storage.Read 7 Oct 2026 · snapdiff.ai
Diff output
A diff returns a percentage, highlighted diff image, and bounding boxes around changed regions.Read 7 Oct 2026 · snapdiff.ai
Scheduled monitoring
The watch API monitors URLs on a cron schedule and sends webhooks when visual changes exceed a threshold.Read 7 Oct 2026 · snapdiff.ai
Supported inputs
It accepts preview, staging, Storybook, and other HTTPS URLs, including deployments on Vercel, Netlify, and Cloudflare Pages.Read 7 Oct 2026 · snapdiff.ai
Usage overages
Usage beyond plan allowances costs $0.01 per diff and $0.002 per screenshot, while diff screenshots do not count against the screenshot quota.Read 7 Oct 2026 · snapdiff.ai
Workflow
It can compare two URLs through an HTTP API without requiring a test suite or CI/CD pipeline.Read 7 Oct 2026 · snapdiff.ai

Plans and prices

Free Free 200 diffs/month · 2,000 screenshots/month · 0 watchers · 10 req/min Read 7 Oct 2026 · snapdiff.ai
Dev $19 a month Monthly 1,000 diffs/month · 5,000 screenshots/month · 3 watchers · 30 req/min · MCP server access Read 7 Oct 2026 · snapdiff.ai
Pro $59 a month Monthly 5,000 diffs/month · 15,000 screenshots/month · 15 watchers · 120 req/min · MCP server access Read 7 Oct 2026 · snapdiff.ai
Team $119 a month Monthly 20,000 diffs/month · 60,000 screenshots/month · 50 watchers · 300 req/min · MCP server access Read 7 Oct 2026 · snapdiff.ai
Scale $299 a month Monthly 100,000 diffs/month · 300,000 screenshots/month · 200 watchers · 1,000 req/min · MCP server access Read 7 Oct 2026 · snapdiff.ai

Every SnapDiff plan and price →

Strong points and limits

Strong points

  • HTTP API compares two URLs without a test suite.
  • Diffs include images and bounding boxes.
  • GitHub Action checks pull requests.
  • Watch API sends threshold-based webhooks.
  • Free plan includes 200 diffs per month.

Limits

  • Free plan has zero watchers.
  • Dev costs $19 a month.
  • Images are retained for 30 days after subscription ends.
  • Overages cost $0.01 per diff and $0.002 per screenshot.

Who it suits

SnapDiff suits developers and teams that need to compare web-page appearance across URLs, pull requests, or scheduled checks. Its HTTP API can also be used without a test suite or CI/CD pipeline.

Verdict

SnapDiff offers several ways to run visual comparisons, from direct URL checks to pull-request and scheduled monitoring. Review the plan quotas, overage charges, and image-retention period when choosing a plan.

Where Specifiction places it

Alternatives to SnapDiffAll alternatives →