Textfix
Convert Case
YouText – Online Text Tool
TextWizHub
FreeTextUtils
WordCounter.net
Word Counter
TextUtility provides free online text utilities like word counter, case converter, password generator, HTML encode decode, text cleaner, and more.

Requestly
modheader
Header Editor
RequestHeaders.com
VibeHeader
HTTP Header Live
Modify Header Value (HTTP Headers)
A local-first ModHeader alternative: rewrite HTTP request & response headers via Chrome's native declarativeNetRequest. No backend, no account, no telemetry.

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TextUtility.online
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| Website | textutility.online | headerflex.app |
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What each product offers, as listed by its team.

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Why this product is good
Recommended for
No analysis of HeaderFlex.app yet.
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A Powerful API Mocking and Testing Tool
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Instantly convert text to UPPERCASE, lowercase, Title Case, sentence case, and more - free, fast, and no sign-up required.
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Free browser extension to modify HTTP request and response headers. No sign-up. Works on Chrome, Firefox, and Edge.
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Free text tools you may need in your daily text routine.
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Add custom HTTP request headers to any site. Set Authorization tokens, override Content-Type, inject debug headers per URL pattern. declarativeNetRequest. Free: 5 rules, Pro: unlimited.
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