Answers

How Many Companies Actually Keep Their Docs Up to Date?

Most teams document most changes. A steady minority always slips, and a smaller slice never gets documented at all. Here is what the data shows.

Written by The DocsKoala Team

It is easy to assume documentation is either good or bad at a given company. The reality is more graded: most teams document most of their customer-facing work, but a consistent share slips through every release, and a smaller portion never gets written at all.

Rather than guess, we measured it across a large sample of open-source SaaS repositories. The pattern is remarkably stable.

Direct answer

Most customer-facing changes do get documented, but not all. In our audit of 29,917 merged pull requests across 514 repositories, 79.7% of customer-facing changes eventually got a docs update, 20.3% shipped with none, and 6.3% were never documented at all. The gap is not caused by bad writers. It is caused by no reliable trigger connecting a merge to the docs it affects.

What the data shows

Across the sample, coverage was high but never complete, and the misses clustered where you would expect: changes that shipped fast and quietly.

  • About 1 in 5 customer-facing changes shipped with no docs update.
  • 6.3% were still undocumented well after merge, effectively permanent debt.
  • Yet 35.2% of customer-facing changes were structured enough to draft docs from the diff alone.

For the full methodology and every figure, see the State of Documentation Debt report.

Why the gap persists

The undocumented slice is not random. It is the work that shipped without anyone connecting the change back to the help center. See why help docs fall out of date for the full mechanism.

  • The person who changed the product is rarely the person who owns the article.
  • There is no automatic trigger from a merged PR to the docs it affects.
  • Fast, small changes are the easiest to forget and the most likely to confuse a customer.

What high-coverage teams do differently

  • They treat a merged customer-facing PR as the trigger to update docs, not a memory task.
  • They draft from the diff so the update is ready to review immediately.
  • They keep a lightweight human approval so accuracy stays high without slowing shipping.

Frequently asked questions

What percentage of product changes get documented?

In our audit, 79.7% of customer-facing changes eventually got a docs update, leaving 20.3% undocumented and 6.3% never documented at all.

Why do companies fail to keep docs up to date?

Not because of bad writers. The gap comes from missing a reliable trigger that connects a merged change to the articles it affects, so fast, quiet changes slip through every release.

How can a team improve documentation coverage?

Trigger updates from merged pull requests rather than memory, draft the change from the diff automatically, and keep a quick human approval step so accuracy holds as coverage rises.

Conclusion

  • Most changes get documented; a steady minority always slips.
  • The miss is a detection problem, not a writing problem.
  • High-coverage teams trigger docs from merges and draft from the diff.
  • See the full report, or let DocsKoala close the gap on your repo.

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