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PasteCheck
Paste your code. See your errors. No setup, no signup.
PasteCheck is a free, mobile-friendly code linter that runs in your browser. Paste JavaScript, TypeScript, Python, or HTML and get instant, tappable error highlights with plain-English descriptions. No install. No account. Just paste and check.
Hey PH 👋 I'm Charles, I built PasteCheck because I kept switching between my code editor and AI tools just to catch basic syntax errors and the back-and-forth was killing my flow.
PasteCheck is a single-purpose tool. Paste your code, get instant highlighted errors and warnings, tap any highlight for a plain-English explanation. No login, no install, no friction.
Supports JavaScript, TypeScript, Python, and HTML — including mixed-language detection inside HTML files.
It's free and always will be in its core form. Would love to hear what languages or features you'd want next. 🙏
About PasteCheck on Product Hunt
“Paste your code. See your errors. No setup, no signup.”
PasteCheck was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #119 on the daily leaderboard. PasteCheck is a free, mobile-friendly code linter that runs in your browser. Paste JavaScript, TypeScript, Python, or HTML and get instant, tappable error highlights with plain-English descriptions. No install. No account. Just paste and check.
On the analytics side, PasteCheck competes within Productivity and Developer Tools — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how PasteCheck performed against the three products that launched closest to it on the same day.
Who hunted PasteCheck?
PasteCheck was hunted by Charles Blackwood. 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.
For a complete overview of PasteCheck including community comment highlights and product details, visit the product overview.
Charles Blackwood