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6/9/20262 min read

Free Text Tools Online: Case Converter, Diff Checker, Base64 Encode (No Upload)

education
Free Text Tools Online: Case Converter, Diff Checker, Base64 Encode (No Upload)

"Can you make all these titles Sentence Case? There are 200 of them."

That's the kind of request that makes you google "bulk case converter" at 5 PM on a Friday. Craftisle's text tools exist for exactly those moments.

The four tools

Case Converter

Handles: upper case, lower case, sentence case, title case, alternating case. Paste text, click, copy.

The title case conversion follows common title capitalization rules (articles and short prepositions stay lowercased). Don't expect it to handle edge cases like hyphenated words or brand names with intentional odd casing.

Real use: "I need 47 product descriptions in sentence case before the newsletter goes out."

Diff Checker

Side-by-side comparison. Paste two versions, differences are highlighted line-by-line. Green for additions, red for removals.

Good for: comparing config files, spotting the one changed line in a deployment YAML, checking what your coworker actually changed in the shared document.

Not good for: binary data, large files (>1MB text will lag), structured formats that should use dedicated diff tools (use git diff for code).

Base64 Encoder/Decoder

Text and file encoding. Encode a string or a small file to Base64, decode back. Supports the standard Base64 alphabet with padding.

Common uses: embedding small images in HTML/CSS as data URIs, encoding credentials for basic auth headers, decoding Base64-encoded data from API responses.

Lorem Ipsum Generator

Generate placeholder text by paragraph count. Uses the classic Cicero-derived Lorem Ipsum. Not much to say — it does what you expect.

FAQ: Free Text Tools Online

How to convert text to uppercase/lowercase free?

Use Case Converter — handles uppercase, lowercase, sentence case, title case, alternating case. Paste text, click, copy. No signup.

Best free diff checker online side-by-side?

Craftisle Diff Checker shows line-by-line differences with green/red highlighting. Good for comparing config files, spotting changed lines in deployment YAML.

Free Base64 encoder/decoder online?

Use Base64 Encoder/Decoder — encode a string or small file to Base64, decode back. Supports standard Base64 alphabet with padding.

How to generate Lorem Ipsum free?

Use Lorem Ipsum Generator — configure paragraph count. Uses classic Cicero-derived Lorem Ipsum. Nothing fancy, does what you expect.


The diff checker and case converter get the most use. Try the Diff Checker — paste two versions of something, see what changed.

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Craftisle Team

Craftisle Team

June 9, 2026