DollarWise

Free Robots.txt Merger — Combine Multiple Robots.txt Files Online

October 23, 2026 · 2 min read · By the DollarWise team

Staging files, old domains, and CMS plugins all leave you with several robots.txt versions floating around. This merger combines them into a single valid file — rules with the same user-agent are grouped together, exact duplicates are removed, and you can strip comments for a clean final file. Everything happens in your browser, so nothing is uploaded.

Robots.txt Merger

Merge multiple robots.txt files into one valid, deduped file — right in your browser.

100% Free Forever No Sign-up No Credit Card Private — files never leave your browser Unlimited Use

1 Paste your robots.txt files

Paste the full contents of each file. Add as many as you like — duplicates across files are removed automatically.

2 Merge settings

Remove duplicate rules
The same Disallow/Allow line appearing in both files is kept once.
Strip comment lines
Removes lines starting with # for a minimal production file.
Group rules by user-agent
Blocks for the same user-agent from different files are combined into one block.

3 Merge & download

✅ Done — your merged robots.txt

🎉 Free forever. No sign-up. No credit card. No limits.

This tool runs entirely in your browser — merge as many robots.txt files as you like.

How it works

Paste each robots.txt file’s full contents into the boxes above, pick a merge style (or fine-tune the toggles), and hit Merge Files. Rules for the same user-agent are combined into a single block, exact duplicates are dropped, and the result downloads as a clean robots.txt you can upload to your site root.

Rule of thumb: keep only one robots.txt per domain at the root (example.com/robots.txt) — crawlers ignore robots.txt files on subpaths, which is exactly why merging stray versions matters.

Everyday uses

  • Site migrations — combine the old domain’s and the staging site’s robots.txt without losing either’s rules.
  • WordPress + plugins — SEO plugins each inject their own directives; merge them into one conflict-free file.
  • Agency handoffs — consolidate several draft robots.txt files from different teams before launch.
  • Audits — dedupe years of accumulated rules into a tidy file you can actually read.
  • Subdomain cleanup — merge rules meant for www and bare-domain variants into one canonical file.