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AnythingText — free online tools for PDF, text, photo, video, SEO and more

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What is Text Diff Checker?

Free — no account needed

Text Diff Checker is one of our Text Tools. Compare two texts and highlight differences. Enter the address you want to look at and the report is built for you, finding in seconds what would take a long time to check by hand. It's free and needs no account; the work itself runs on our servers and the result isn't stored. More in this collection: Transform, clean, format, and analyze text instantly.

People also search for

text diff checker online compare two texts side by side find differences between two texts

How to use Text Diff Checker

  1. 1

    Open Text Diff Checker and enter the URL or domain you want checked.

  2. 2

    Run the check and wait a moment while the report is put together.

  3. 3

    Work through the findings — each one explains what it means and what to do about it.

Key Features

Itemised findings

Every issue is listed with what it affects and why it matters.

Checks in seconds

Covers in one run what would take a long time to verify manually.

Processed, not stored

Your input is used to produce the result and is not kept afterwards.

REST API

Automate it from your own code with an API key.

Works on any device

Full functionality on phone, tablet, and desktop.

Who Is This For?

SEO and marketing

Check a site before and after you change it.

Developers

Catch problems before they reach production.

Site owners

See what is wrong with your own site in plain language.

Frequently Asked Questions

Is Text Diff Checker free?

Yes. Text Diff Checker runs in your browser and is free to use, with no account, no watermark, and no usage cap.

Do I need to create an account?

No. Open the page and use it. An account only becomes useful if you want to save tools to your own toolbox.

What happens to my data?

Your input is sent to our server, used to produce the result, and not stored afterwards. Tools that call an AI provider are covered in detail on our AI processing page.

How long does a check take?

Usually a few seconds. Checks that fetch several pages take a little longer, and progress is shown while it runs.

Can I use Text Diff Checker from my own code?

Yes. It has a REST endpoint — authenticate with an API key in the X-API-Key header. The API docs cover the request and response shape.

Do I need to install anything?

No. Text Diff Checker runs in the browser on desktop, tablet, and phone. There is nothing to download and nothing to keep updated.

More detail on plans is on our pricing page, and how AI-powered tools handle your data is covered on the AI processing page.

More Text Tools

Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case and more.
Word Counter
Live word count, character count, and reading time analytics.
3D Word Cloud
Generate a 3D rotating word cloud where word size reflects frequency. Export as image or share via link.
Sort Lines
Sort lines as text, numbers, or by length. A–Z, 0–9, shortest first.
Prefix & Suffix
Prepend or append text to each line online.
Shuffle Text
Randomize order of lines or shuffle characters per line.
Clean Text
Trim lines, remove empty lines, dedupe, collapse whitespace.
Extract Emails
Extract all email addresses from any text, HTML, or document content.
Extract URLs
Extract all URLs and links from any text, HTML, or document content.
Number Format & Stats
Format numbers, round, sum/min/max/avg, numbers to words.
Generate Random Text & Numbers
Random words, random characters, number sequences.
Text to ASCII Art
Convert text to ASCII art with multiple font styles.
Text to List Converter
Convert text to numbered, bulleted, CSV, JSON, HTML, and Markdown lists.
Encoder / Decoder
Encode and decode URL, Base64, HTML entities online.
Social Media Post Formatter
Write your post once and preview it with character counts for Twitter/X, LinkedIn, Instagram, Threads, and Facebook.
Text Editor
Full-featured online text editor with file management, text transforms, cleanup tools, find and replace, and more.
Readability Scorer
Analyze text readability with Flesch-Kincaid, Gunning Fog, SMOG, and Coleman-Liau scores. See what grade level your text targets.
Invisible Character Detector
Find and remove hidden characters like zero-width spaces, non-breaking spaces, and other invisible Unicode characters.
Tone Rewriter
Rewrite any text in a different tone — formal, casual, friendly, firm, diplomatic, or enthusiastic.
Headline Improver
Transform boring headlines into compelling, click-worthy titles. Get multiple AI-generated alternatives.
Markdown Notes
Write and auto-save personal notes in Markdown with live preview, image embedding, and YouTube support.
Lorem Ipsum Generator
Generate placeholder text in classic, hipster, business, tech, or pirate styles.
URL Shortener
Shorten long URLs into compact shareable links.
Dot Matrix Text Generator
Render text as a retro LED dot matrix display with custom colors and styles.
Zalgo / Glitch Text Generator
Transform normal text into creepy zalgo glitch text using combining Unicode diacritical marks.
Text Inverter & Flipper
Flip, mirror, reverse, and bubble-ify your text using Unicode character mappings.
Morse Code Translator
Translate text to Morse code and back with audio playback, a visual dot-dash display, and MP3 download of the Morse sound at any speed.
Jargon Translator
Translate corporate jargon, technical terms, and buzzwords into plain, simple language anyone can understand.
Hook Generator
Generate compelling opening sentences and hooks for articles, emails, presentations, and social posts.
Bullet Point Expander & Compressor
Expand brief bullets into detailed paragraphs, or compress lengthy text into concise bullet points.
Readability Simplifier
Simplify complex text to a target reading level. Make content accessible to any audience.
Email Thread Cleaner
Remove quoted reply history, signatures, and forwarding headers from email threads. Get clean text.

API Keys

Generate API keys for programmatic access to AnythingText tools. Include X-API-Key header in your requests.

Generate New API Key

Your API Keys

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Quick Start

Use your API key in the X-API-Key header:

curl -X POST https://anythingtext.com/api/tools/case \
  -H "Content-Type: application/json" \
  -H "X-API-Key: atk_your_key_here" \
  -d '{"text": "hello world", "mode": "upper"}'

See API Documentation for all available endpoints.

How It Works

Three simple steps to transform your content. No signup required for most tools.

1

Choose a tool

Browse our catalog or search for exactly what you need. PDF, audio, AI, and developer tools — all in one place.

2

Upload or type

Drop a file, record audio, or paste your text directly. Most tools run in your browser — nothing to install.

3

Get results instantly

Download, copy, or share your results in seconds. Everything is fast, completely private, and free to use.