Find and Replace Text Online
Build an ordered literal replacement plan with per-rule controls, match receipts, and a live final output.
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浏览器内运行这个工具能做什么
Free online multi-rule find-and-replace for plain text. Add, enable, remove, and reorder literal rules; review per-rule and total match counts plus final change status; then copy the output. Tool code runs in your browser and does not submit entered content to a TOOLGRID processing endpoint.
Each rule has its own enable and Case-sensitive toggles, position controls, and match receipt. Total matches, rules that actually changed text, and final output status make the whole cleanup plan reviewable before you copy it.
Plain string replacement runs in your browser. Tool code does not submit entered text to a TOOLGRID processing endpoint. Browser-local processing is not a blanket security guarantee, so review browser extensions, device security, and shared sessions before handling sensitive material.
这个工具可以完成什么
Paste a function or config block and rename a variable in one shot — Case Sensitive ensures you don't touch unrelated lowercase words. Faster than launching an IDE for a quick rename in a Slack thread or doc.
Replace user emails, customer IDs, and project names in one ordered plan before pasting a log into a ticket. Per-rule receipts show which sensitive values were actually present.
Swap inconsistent column values — "N/A" to empty, full state names to two-letter codes, smart quotes to straight quotes — across thousands of rows in one pass before importing the data.
依赖结果前需要检查什么
- Performance and maximum practical input size depend on browser memory, device speed, and the structure of the input.
- Review the generated result before replacing or publishing an original file.
如何使用
- 1
Paste the source text into the input area — multiline content is fine, line breaks are preserved.
- 2
Edit the first literal rule, add any further rules, and use the arrow controls to set their execution order. Each rule can be enabled or made case-sensitive independently.
- 3
Review every rule's match count, the aggregate change cards, and the final output before copying it.
使用场景
Paste a function or config block and rename a variable in one shot — Case Sensitive ensures you don't touch unrelated lowercase words. Faster than launching an IDE for a quick rename in a Slack thread or doc.
Replace user emails, customer IDs, and project names in one ordered plan before pasting a log into a ticket. Per-rule receipts show which sensitive values were actually present.
Swap inconsistent column values — "N/A" to empty, full state names to two-letter codes, smart quotes to straight quotes — across thousands of rows in one pass before importing the data.
When migrating docs between platforms (Notion → Markdown, Confluence → GitHub Wiki), use find-and-replace to swap link prefixes, brand names, or version numbers in bulk before exporting.
Replace real company names, project codenames, or person names with placeholders before pasting an internal example into a public forum, Stack Overflow, or a bug report.
使用技巧
Before copying the output, inspect both per-rule and total match counts. Zero usually means a typo, a wrong case setting, or an earlier rule changed the target; an unexpectedly high count usually means the find text is too broad.
Enable Case-sensitive for code, environment keys, or filenames. Leave it off for prose rules where capitalization at the start of a sentence should also match.
This tool matches plain strings only — no \b word boundaries, no .* wildcards. To find "foo" but not "foobar", make your find string "foo " (with a trailing space) or include surrounding context characters.
Later rules receive earlier output. For example, old → new followed by new → latest turns original old values into latest. Use the arrow controls and per-rule receipts to audit cascades before delivery.
常见问题
Does it replace all matches at once?
Each enabled rule replaces every non-overlapping occurrence in its current input, then passes that result to the next rule. The output and all match receipts update live.
Does it support regular expressions?
No. This tool matches plain strings only — no \b boundaries, no .* wildcards, no capture groups. If you need regex, paste your source into a code editor (VS Code, Sublime, JetBrains) which all support regex find-and-replace, or use a regex-aware online tool. We deliberately keep this one fast and predictable.
What does Case Sensitive actually do?
For any individual rule, OFF lets "Cat" match Cat, cat, CAT, and CaT. ON matches only the exact sequence Cat. The replacement string is always inserted verbatim.
Can I use it on multiline content like CSV or pasted code?
Yes. Line breaks are preserved and the tool searches across the entire pasted content as one string. CSV rows, multi-line code, prose paragraphs, and log dumps all work. Empty lines and trailing whitespace are kept exactly as you pasted them.
Is my text uploaded or stored anywhere?
JavaScript's built-in string replacement runs in your browser. Tool code does not submit entered text to a TOOLGRID processing endpoint. Review browser extensions, device security, and shared sessions before handling sensitive material.
Can I undo a replacement?
The original input is never overwritten. Disable, delete, edit, or reorder a rule and the output is recomputed from that original source, so you can revise the plan without reverse-replacing text.
Why does my replacement seem to over-match?
Plain-string matching has no word boundaries, so "the" matches inside "there", "them", and "breathe". Either include surrounding spaces in your find string (" the ") or use Case Sensitive to narrow the match. If you need precise word-only replacements, regex in a code editor is the right tool.
Is this tool offline-ready?
Processing happens locally after required page assets load; TOOLGRID does not promise that every tool is offline-ready.
下一步常用工具
如果还需要校验、转换或复用结果，可以继续打开相近的浏览器本地工具。