Skip to content

Text tools / Diff checker5 tools

Best tools to compare two texts

Spot the differences between two versions of a text. Facts come from each tool's own pages, and every score says where it comes from. How we rank

Tools
5
Researched
5
Free option
3
Only listed
0

Made by agathox · free, no sign-up, runs in your browser

Need Diff checker right now? Try ours.

We build this tool, so it is labelled. It is scored with the same tests as the rest, and this box never changes the ranking below.

Diff checker on agathox

Ranked by signals we can measure or quote: website health, the facts each tool's own pages state, and community discussion. Nothing here has been hands-on tested yet, so this is not a quality test. How the signals rank works

Quick answer

  • No signup needed: agathox text tools, Text Compare
  • Files stay on your device: agathox text tools

Based on what each tool's own pages say. A tool is left out when its pages say it varies or do not say. Details are listed under each tool.

Show only:

Want two of these head to head? Compare tools side by side.

  • 1

    agathox text toolsMade by agathox

    Free optionNo signupFiles stay on your deviceHealth 4.6
    Open agathox text tools
    Details and sources
    Free tier
    Free to use. No paid plan and no limits on how many files you process.
    Paid plan
    There is no paid plan.
    Signup
    No account or sign-up is needed.
    Watermark
    Nothing is added to your files.
    Where files go
    Runs in your browser, so files are not uploaded.

    From the tool's own pages, checked 2026-11-10. Sources: Privacy page. Prices and limits change; check the tool before you rely on them.

    Full page for agathox text tools

  • 2

    Diffchecker

    Free optionSignup unclearFile handling unclearHealth 4.8
    Open Diffchecker
    Details and sources
    Free tier
    Basic plan is free and includes ads. Side-by-side and word-level text comparison are unlimited, image comparison is unlimited, and there are no file size limits. Many extra features are capped at 5 or 10 uses a month. Desktop app, offline use and folder comparison are not included.
    Paid plan
    Per user per month. Pro + Desktop $15 (ad-free, desktop app, free trial). Diffchecker Legal $20. Enterprise $40, annual billing only. Billing can be monthly or yearly, with a 29% off label shown for yearly. No currency or country pricing is stated.
    Signup
    Not stated.
    Watermark
    Not stated.
    Where files go
    The privacy policy says content shared in uploaded documents is collected and may be stored in any country it operates in, including Canada, the United States or elsewhere. Information is kept as long as needed to provide the service, with no fixed period. Deletion can be requested. It does not say whether comparisons run in the browser or on servers.

    From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy policy. Prices and limits change; check the tool before you rely on them.

    Full page for Diffchecker

  • 3

    Text Compare

    Free optionNo signupFiles uploadedHealth 3.6
    Open Text Compare
    Details and sources
    Free tier
    Free for everyone. Free users can open Word, Excel and PDF files up to 3 MB and see ads. Logged-in users get 5 free tries per month of each Pro feature.
    Paid plan
    Pro exists (10 MB files, no ads, 3x compute time, statistics, PDF export) but its price is not stated on the pages read.
    Signup
    No sign-up required.
    Watermark
    Not stated.
    Where files go
    Texts are sent to the server over an encrypted connection, compared, and not stored.

    From the tool's own pages, checked 2026-11-01. Sources: Home page, Privacy policy. Prices and limits change; check the tool before you rely on them.

    Full page for Text Compare

  • 4

    DiffNow

    UnclearSignup unclearFiles uploadedHealth 3.7
    Open DiffNow
    Details and sources
    Free tier
    Not stated.
    Paid plan
    Not stated.
    Signup
    Not stated.
    Watermark
    Not stated.
    Where files go
    Pasted text and uploaded files are deleted during the comparison, and comparison results are deleted at the end of your browsing session. The page says: “Pasted text and uploaded files are deleted during the comparison, and comparison results are deleted at the end of your browsing session.”

    From the tool's own pages, checked 2026-11-08. Sources: Home. Prices and limits change; check the tool before you rely on them.

    Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”

    Full page for DiffNow

  • 5

    Mergely

    UnclearSignup unclearFile handling unclearHealth 3.2
    Open Mergely
    Details and sources
    Free tier
    Not stated.
    Paid plan
    Not stated.
    Signup
    Not stated.
    Watermark
    Not stated.
    Where files go
    Files are processed directly in the user's browser and are not uploaded to the server. The page says: “Files are imported directly into your browser. They are not uploaded to the server.”

    From the tool's own pages, checked 2026-11-08. Sources: Home. Prices and limits change; check the tool before you rely on them.

    Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”

    Full page for Mergely

Answers come from each tool's own pages (“Unclear” means they do not say). Tick “Compare” on two to four tools to read them side by side.

Other Text tools rankings

Know a tool that should be here? Submit it.

Something wrong or out of date on this page? Tell us and we will fix it.

Search tools

Search tools and tasks