URL Parser & Query Builder
Parse URL components, edit query parameters and rebuild an encoded URL.
Parse URLDeveloper Tools
Encode reserved HTML characters or decode named and numeric HTML entities. The interface provides a focused workflow, clear output and export or copy controls…
Encode reserved HTML characters or decode named and numeric HTML entities.
Privacy: Your input is processed in the browser where supported and is not intentionally stored by this tool.
The code, structured data, expression, token, or sample value requested by the interface.
Choose only the settings that apply to the result you need; leave optional controls unchanged when you are unsure.
Start the task and wait for the interface to return its result or a clear setup message.
Test the result in a non-production environment. Never paste passwords, private keys, live access tokens or confidential production data.
Parse URL components, edit query parameters and rebuild an encoded URL.
Parse URLIdentify common browser, rendering engine, operating system and device signals in a user-agent string.
Parse User AgentGenerate responsive CSS clamp values from minimum, maximum and viewport measurements.
Generate clamp()Build linear or radial CSS gradients with adjustable angle, colours and stop positions.
Generate GradientCreate and preview CSS box-shadow values including inset, blur, spread and colour.
Generate ShadowThe code, structured data, expression, token, or sample value requested by the interface. Start with a representative input and use only the options needed for your intended result.
A transformed, generated, or diagnostic result for the submitted technical input. Encoding changes representation, not confidentiality. It is not a substitute for encryption.
Test the result in a non-production environment. Never paste passwords, private keys, live access tokens or confidential production data.
Processing stays in the browser where the individual feature supports it. Live public checks use a protected, rate-limited site endpoint; avoid unnecessary sensitive data.
The page can be used without creating a visitor account. Your browser or device may limit unusually large files or demanding media jobs.
HTML Entity Encoder & Decoder is intended for a specific, repeatable task rather than a general-purpose editor. Encode reserved HTML characters or decode named and numeric HTML entities. The result changes when the source data or selected options change, so it is easy to run a second comparison.
The code, structured data, expression, token, or sample value requested by the interface.
A transformed, generated, or diagnostic result for the submitted technical input.
It can help when you need to inspect a small representative sample before applying the same change in a production workflow. Start with a representative input, inspect the first result, then adjust one setting at a time if you need a different outcome.
Processing stays in the browser where the individual feature supports it. Live public checks use a protected, rate-limited site endpoint; avoid unnecessary sensitive data.