This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
web_harvester
Scrapers stop after one grab. This one keeps watching.
Most scrapers extract once and quit. web_harvester is a no-code Chrome extension + Python CLI that keeps running on your schedule and tells you what changed. Pick a page, tick the fields (no code, it finds them), leave it on. It pings you only when something moves: price drop, back in stock, new listing, rank or review shift, via Slack, Discord, or email. Data lands in Sheets/CSV/Excel/SQL, stacked by date. Public data, your own session, robots respected, no CAPTCHA or proxy evasion.
Hi PH, solo maker here. The value was never in scraping a page once, it was in being told the second something changed.
I built this because I was tired of re-checking competitor and supplier pages by hand every morning, and because every scraper I tried gave me one snapshot and called it done. So web_harvester is built around the diff: set a recipe once (URL + fields), leave it on, and it only pings you when something moves.
Under the hood a small recon engine sizes up each site across a few modes (JSON-LD, embedded JSON, repeating DOM) and auto-picks an extraction strategy, which is also what makes no-code field discovery work: it already knows where the values are, so you just tick the ones you want. SSR/JSON pages go server-side; dynamic or logged-in pages run inside your own real Chrome session, using your own cookies. I never store credentials or auto-log-in.
It is deliberately scoped: public data, your own access, low frequency, robots respected, no CAPTCHA or proxy evasion, by design.
Free on the Chrome Web Store (Basic: harvest, field-discovery, CSV/Sheets export):
https://chromewebstore.google.co...
Honest feedback very welcome. I will keep building in public.
How does it actually handle sites that change their layout or DOM structure between scrapes - does it break silently or try to adapt?
About web_harvester on Product Hunt
“Scrapers stop after one grab. This one keeps watching.”
web_harvester was submitted on Product Hunt and earned 3 upvotes and 2 comments, placing #158 on the daily leaderboard. Most scrapers extract once and quit. web_harvester is a no-code Chrome extension + Python CLI that keeps running on your schedule and tells you what changed. Pick a page, tick the fields (no code, it finds them), leave it on. It pings you only when something moves: price drop, back in stock, new listing, rank or review shift, via Slack, Discord, or email. Data lands in Sheets/CSV/Excel/SQL, stacked by date. Public data, your own session, robots respected, no CAPTCHA or proxy evasion.
web_harvester was featured in Chrome Extensions (52.7k followers) and Productivity (655.7k followers) on Product Hunt. Together, these topics include over 158.3k products, making this a competitive space to launch in.
Who hunted web_harvester?
web_harvester was hunted by Paul Oh. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Paul Oh