A Free Diffchecker Alternative That Runs in Your Browser
Diffchecker is a well-known online diff tool. Its free plan counts many features by the month. DiffResolver has no counter, no account, and no advertisements. Every comparison runs in your browser. This page lists the facts, so you can pick the tool that fits your work.
Feature comparison
| Feature | DiffResolver (free) | Diffchecker Basic (free) | Diffchecker Pro + Desktop ($15 per month) |
|---|---|---|---|
| Unified (inline) view | Unlimited | 5 per month | Unlimited |
| Character-level diff | Unlimited | 10 per month | Unlimited |
| Syntax highlighting | Unlimited | 5 per month | Unlimited |
| Merge changes | Unlimited | 10 per month | Unlimited |
| Export the diff | Unlimited | 5 per month | Unlimited |
| Custom ignore rules | Whitespace and case | 5 per month | Unlimited |
| PDF diff | Unlimited | Included, some options counted | Unlimited |
| Word diff (.docx) | Unlimited | Included, some options counted | Unlimited |
| Excel diff (.xlsx, .xls, .ods) | Unlimited | Included, some options counted | Unlimited |
| Image diff (PNG, JPG, WebP) | Unlimited | Included, some options counted | Unlimited |
| OCR of scanned pages | In your browser | Included | Included |
| Folder diff | Unlimited | Not included | Included |
| Archive diff (ZIP, TAR, 7z, RAR) | Unlimited | Not listed | Not listed |
| Hex (binary) diff | Unlimited | Not listed | Not listed |
| Three-way merge (base, ours, theirs) | Unlimited | Not listed | Not listed |
| Saved comparisons | In this browser only | Not included | Included |
| Interface languages | 9 languages | Not listed | Not listed |
| Advertisements | No | Yes | No |
| Account needed | No | No | Yes |
The Diffchecker limits and prices come from their public pricing page, as of August 2026. Plans change, so check the current terms: Diffchecker pricing page
Free in DiffResolver, with no limit
These tools need no account and have no monthly count. Diffchecker keeps the folder diff for a paid plan. It does not list an archive diff, a hex diff, or a three-way merge.
- Compare Folders
- Compare Archives
- Compare Binary Files (Hex)
- 3-Way Text Merge
- 3-Way JSON Merge
- 3-Way CSV Merge
The three-way text merge also reads a pasted Git conflict. It splits the conflict markers into the base, ours, and theirs panes for you.
No upload, no account, no counter
- Every comparison runs in your browser. No file and no text goes to a server.
- No account and no sign-in. Open a tool and use it.
- No monthly count on any tool. Compare as often as you want.
- No advertisements. Analytics load only after you accept them.
Where Diffchecker is ahead
Diffchecker has a desktop application, keeps saved comparisons in its cloud, and summarizes changes with AI. DiffResolver has none of these. Snapshots stay in the browser that saved them, so another computer cannot open them.