RenderLog guides

Guides for no-code web tests, visual regression and API output

Use these guides to decide what to test without code, what to compare visually and when a rendered file should become a recurring check. Each article starts from a real page task, not a generic testing checklist.

Choose what to check

All guides

Start with a real page, define the expected result and use the matching walkthrough to set up your first run.

How to capture website screenshots with an API
7 min read

How to capture website screenshots with an API

Start with GET for a simple public page, use POST for structured settings and poll the job when the render runs asynchronously.

Use this when: Use GET for a simple public URL and small set of options.

website screenshot APIrender API
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How to monitor website changes
6 min read

How to monitor website changes

Monitor the page states that matter to your business, then review a useful diff instead of collecting screenshots nobody owns.

Use this when: Name the page owner before choosing a schedule.

website change monitoringvisual monitoring
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How to test website forms without code
6 min read

How to test website forms without code

Start with the form state a person already checks, then make its expected text, values and visible result reviewable after every run.

Use this when: Choose a form with a named owner and a real business consequence.

no-code website testingform testing
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SEO tests and no-code autotests for public websites
6 min read

SEO tests and no-code autotests for public websites

SEO problems and UI regressions often look healthy to uptime checks. Public pages need checks that read the page the way a reviewer and a crawler would.

Use this when: Confirm that indexable pages still return 200 and are not blocked by robots tags.

SEO testingno-code autotests
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No-code web tests for pages, forms and UI states
5 min read

No-code web tests for pages, forms and UI states

If a person already checks the page by hand before release, that page is a strong candidate for a no-code web test.

Use this when: Pricing page: the plan price and call to action still look right.

no-code web testingautomated UI testing
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Monitor pricing pages for visual changes
4 min read

Monitor pricing pages for visual changes

Pricing pages usually break in ways uptime checks miss: a wrong CTA, a shifted mobile table, a stale discount, or the wrong plan.

Use this when: Wrong call to action after a campaign update.

pricing page monitoringvisual regression testing
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When to use GET or POST for API runs
3 min read

When to use GET or POST for API runs

Choose GET for a fast one-off call. Switch to POST when the run needs real setup, structured checks, or ownership.

Use this when: GET: fast call with a URL and a few query parameters.

screenshot apirender api
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Ready to apply this on a real page?

Turn the next important page into a saved result, a reviewed baseline or a recurring check instead of leaving it as a one-off issue.