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Input
INI
Limit
1 MiB
Runtime
Browser

Merge INI with an explicit right-hand overlay

Apply one transparent overlay rule: changed-document assignments replace matching base assignments while unmatched entries remain.

Local processingNo sign-upNo content upload

Merge INI

Inputs are limited to 1 MiB and stay in this browser tab.

Paste or edit the source. Tool Swim does not upload or save it.

Matching section and key strings replace base values; other accepted assignments are appended deterministically.

Merged INI

Nothing is placed in a URL, account, or remote log.

What this tool does

Bounded, explicit, and local

Generic configuration merge semantics do not exist. This route implements one reviewable policy over parsed section and key strings; it does not resolve comments, interpolation, included files, defaults, or application schemas.

Right-hand precedence is the whole policy

When both documents define the same parsed section and key, the overlay value wins. The result reports replaced and added assignments for review.

Comments cannot be merged semantically

Comments and layout have no portable ownership rule, so the generated serialization is deterministic rather than a promise to preserve both source presentations.

Primary references

Questions and answers

Related INI and Properties tools

INI CompareReport added, removed, and changed literal assignments after both documents pass the same conservative grammar.INI ValidatorCheck sections, keys, assignments, comments, duplicates, and limits without claiming compatibility with every INI consumer.INI FormatterNormalize section and assignment layout without pretending that every application accepts the same INI grammar.