This guide follows the working logic of the extension's built-in help and takes you from the first website through automatic monitoring, comparison, exclusions and diagnostics.
Enter the domain and optionally a custom name. The first scan creates the baseline.
Before the first real scan choose a folder for local history. Full PRO is free for 7 days after registration; then the manual PRO activation is required.
The next successful scan shows added, changed, moved and removed elements.
Compare Before / After for desktop, tablet and phone.
BYDIFF starts from the home page, Sitemap, robots.txt, and other sources, then recursively follows discovered internal URLs. On repeat scans, known URLs are used as a starting map while discovery of new pages remains active. English «Gentle». English 429/503 English.
«First discovered» — The URL entered monitoring for the first time. «Changed» — Data differs from the selected older version. «Removed» — Removal is confirmed by HTTP 404/410. English URL English, Sitemap English.
English URL. English «Split» English Title, Description, H1–H6, English: «Visual», «Content» English «Metadata». English 1440×900, 768×1024 English 390×844. ArchiveEnglish JavaScript-English JS-English.
English PRO English: 7, 30, 60, 90, 180, 365 days English. ★ English. Versions English.
English CSS-English URL-English, typesEnglish, UUID, nonce, English/English/English.
English. HTML+CSS-English BYDIFF. English «English» English.
English backgroundEnglish Chrome BYDIFF English, every 3 days English once a week. English PRO-English Trial English.
Diagnostics English, retries, 429/503, English URL English Chrome English «Gentle». English. «Clear temporary cache» English.
English, Pro-English Pro. Checkpoint, English URL-English.
English Restore defaults English, Pro-English.
«Gentle» English. «Balanced» English Chrome. «Fast» — English pagesEnglish 429/503.
Admin BYDIFF English, PRO English ID English. English.
English PRO English 7 days English PRO English manual activation via email or Telegram. English 1000 URL BYDIFF English.
RetryEnglish changes Title, Description, H1–H6, English, Schema, robots.txt, Sitemap, CSS/JS, English SEO-English pagesEnglish changes. BYDIFF English changes.
BY + DIFF: the product name reflects comparison between website states.
DIFF is the established abbreviation of Difference. The product descriptor uses the natural phrase Website Change Monitoring.
The developer link at the bottom of the extension opens the BYDIFF support page.
Click the developer name Barkalov Yury at the bottom of the sidebar. The Support page opens in a new tab, where you can use the developer contact channel.
Pro is managed by your BYDIFF account plan.