042 · TEXT
Find & Replace Text
Find one or many search terms and replace them simultaneously from the original text, with total and per-rule counts.
LOCALBrowser-local processing
LOCALText you type or load and find-and-replace results stay in this browser and are not sent to or stored on a server.
Type, paste, or drop a text file
You can also drop a TXT, MD, or CSV file anywhere in this workspace.
Enter the source text to find and replace.0 / 1,000,000
Local processing · No server upload · Service limit: 1,000,000 input characters · 100 rules · 1,000 find characters · 10,000 replacement characters · 5,000,000 result characters
Changed result0 Result chars
The source remains unchanged and the result is generated separately.
HOW TO USE
How to use
- 01
Enter or paste the original text and add as many find/replace rules as needed.
- 02
Choose whether matching should be case-sensitive.
- 03
Run the operation; all matches are resolved against the original text before replacements are applied.
- 04
Review the total and per-rule replacement counts, then copy the result.
- 05
Use Clear all to reset the original text, rules, result, and status.
EXPERT POST
Practical standards for safe find and replace
Understand source-based simultaneous replacement, overlapping-term priority, case policy, and output limits to avoid unintended chained edits.Replacement runs once against the original text
All match candidates are resolved from the original source before replacements are applied, so replacement output is not searched again and chained edits do not occur.
Overlapping terms use a deterministic priority
Longer search terms win when candidates overlap at the same position; equal lengths use the earlier rule.
Case policy mainly affects alphabetic matching
Case-insensitive mode case-folds English letters while scripts without letter case, such as Korean and Japanese, are compared as written.
Literal search treats regex symbols as normal text
Dots, asterisks, brackets, and similar characters are matched literally rather than interpreted as regular expressions.
Source and result remain separate
The output never overwrites the original input. Review total and per-rule counts before copying large replacement results.
Large jobs must respect both input and output limits
Input length, rule count, find/replacement size, and final result size have separate limits because long replacements can expand output significantly.
IMPORTANT NOTES
Important notes
- Matching is literal, not regex. Characters such as . * [ ] are searched as plain text.
- The same find value cannot be used twice because it would make the result ambiguous.
- When search terms overlap, the longer term wins; equal lengths use the earlier rule.
- A replacement that contains another find term is not searched again because matching is based on the original text.
- Limits: 1,000,000 input characters · 100 rules · 1,000 find characters · 10,000 replacement characters · 5,000,000 result characters.
FAQ
Frequently asked questions
01Can rules affect one another?+
No. All match candidates are calculated from the original text first, so chained replacement does not occur.
02Does it support regular expressions?+
No. TOOL042 uses literal string matching.
03How does case-insensitive matching work?+
English letters use the fixed case-folding policy; scripts without case such as Korean and Japanese are compared as-is.
04Can I add the same search term twice?+
No. Duplicate find values are blocked before execution under the selected case policy.
05Does the result overwrite the original text?+
No. The result is separate and the original text stays unchanged.