Privacy guide · Updated September 22, 2026

Private browser tools that process data locally

For small transformations, local browser processing can keep your input on your device. The useful question is not whether a site says “private,” but what the browser actually sends over the network.

Short answer

A local browser tool performs the transformation with JavaScript already loaded in your browser. Your input does not need to be sent to an application server. QuickTiny uses this model for Smart Actions and its supported JSON, text, encoding, timestamp, password and image tools.

Tools available locally

TaskQuickTiny toolTypical input
Format or repair JSONJSON FormatterAPI responses, config snippets
Encode or decode Base64Base64 ToolText tokens and payloads
Encode or decode URLsURL ToolQuery values and components
Convert Unix timestampsTimestamp ConverterSeconds or milliseconds
Clean, sort or deduplicate textClean TextLists and copied text
Compress an imageImage CompressorJPG, PNG and browser-readable images
Generate a passwordPassword GeneratorLocally generated values

How to verify a “local” claim

  1. Read the page's privacy explanation and identify which actions require a server.
  2. Open browser developer tools, select the Network panel, clear it, and perform the transformation.
  3. Check that the input or file is not present in an outgoing request.
  4. Separate analytics requests from content-processing requests: analytics may record a page or categorical event without containing your input.

What local processing does not guarantee

Local processing reduces exposure to an application server, but it does not make a compromised device, malicious browser extension or untrusted webpage safe. Avoid pasting production secrets, private keys, passwords or regulated personal data into any website when a dedicated offline workflow is required.

QuickTiny's measurement boundary

QuickTiny may record page views and categorical events such as “tool action clicked” to understand whether tools work. These events do not include pasted text, generated passwords or image contents. The current privacy policy is the authoritative source.

Frequently asked questions

Do local browser tools work without uploading my input?

Yes, when the transformation is implemented in client-side JavaScript. The page code runs on your device and can produce the result without sending the input to an application server.

Can I safely paste secrets into any local tool?

No. Local processing reduces server exposure, but a compromised device, malicious extension or dishonest page can still capture data. Use dedicated offline tooling for production secrets and regulated data.

Does QuickTiny store pasted Smart Actions content?

No. Smart Actions detection happens in the browser, and its measurement events contain categories rather than the pasted value.

Can I verify local processing myself?

Yes. Use the browser Network panel while running the action and inspect outgoing requests for the input or file.

Try QuickTiny

Use Smart Actions to paste a non-sensitive example and let QuickTiny suggest the right browser tool, or open a tool directly from the links above.