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Asset Cache-Busting URL Builder
Add or replace a chosen asset URL query parameter with an explicit version or hash value.
Asset URL, Version parameter, Version or hash
asset-cache-busting-url-builder.json (complete report and generated source where applicable)
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter values using the displayed examples; observe the documented input shape and limits.
- Choose Calculate result. Review the complete JSON report and any generated source text it contains.
- Download result to save the complete report; copy generated source into your project when relevant. Reset restores examples and clears output.
Examples
Asset URL: https://example.com/app.js?x=1#top
Version parameter: v
Version or hash: abc123
Limitations
- HTTP(S) URL only. Other query entries and fragment retained through URL serialization. Does not hash, upload or invalidate an actual asset.
- Maximum 100,000 UTF-16 units per field, 400,000 UTF-8 combined input bytes, 4 MiB output and 30 seconds in a local worker. Tool-specific bounds may be tighter.
- Generated source is contained in the JSON download and is never executed. Local inspection does not verify remote systems or establish standards certification.
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