Does Find and Replace support regular expressions (regex)?

Yes. Toggle 'Regex mode' to enter full JavaScript regular expressions as the search pattern, including character classes (\d, \w), quantifiers (+, *), groups (()), and back-references (\1) in the replacement string.

Can I find and replace across multiple lines using multiline mode?

Yes. Enable the 'multiline' flag (equivalent to /m) to make ^ and $ anchors match the start and end of each line rather than only the document start and end.

Find and Replace Text

Q: How does the Find and Replace Text tool work in browser memory?

ToolJiffy applies JavaScript String.prototype.replace() and regex substitution to find all occurrences of the search term in your text and replace them with the specified replacement string — running 100% in browser memory with no server uploads.

Q: Is my text data uploaded to any cloud server?

No. All string search and replacement operations run 100% locally in your browser using JavaScript. Your text never leaves your device.

Q: Can I do case-insensitive Find and Replace?

Yes. Toggle the 'case-insensitive' flag (equivalent to the /i regex flag) to match 'Apple', 'apple', 'APPLE', and all case variants simultaneously.

Q: Can I replace only the first occurrence or all occurrences?

Both modes are available. 'Replace first' replaces only the first match. 'Replace all' uses the global /g flag to substitute every occurrence throughout the entire text.

Q: What regex back-references can I use in the replacement string?

Use $1, $2, etc. to reference capture groups from the search pattern. For example, searching for (\w+)@(\w+) and replacing with $2@$1 swaps the parts of an email address.

Free online find and replace text — bulk edits that word processors make tedious.

100% Private — Runs entirely in browserInstant calculation & resultFree, no sign-up

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Bulk find and replace text — no word processor required

Bulk text editing tasks — renaming dozens of variable names across a file, replacing an old domain name throughout a document, sanitizing placeholder text in a template, or normalizing inconsistent terminology across a large dataset — are tedious to perform manually and require careful attention to catch every occurrence. ToolJiffy Find and Replace Text is a powerful browser-based text editor that handles simple literal substitutions and advanced regex replacements with regex back-references, flags, and multiline matching.

Four levels of Find and Replace capability

Simple literal replacement: Find exact text and replace with any other text. No special characters required — what you type is what is matched.
Case-insensitive matching: Catch all case variants (UPPERCASE, lowercase, Mixed Case) simultaneously with a single search term.
Regular expression mode: Use full JavaScript regex patterns including \d+ for digit sequences, \b for word boundaries, [a-z]+ for lowercase runs, and complex alternation groups.
Capture group back-references: Reference matched substrings in the replacement using $1, $2, etc. — powerful for reformatting structured data like dates from MM/DD/YYYY to YYYY-MM-DD.

Practical find-and-replace use cases

Template variable substitution: Replace {{COMPANY_NAME}} and {{DATE}} placeholders in document templates with real values.
Domain migration: Replace http://old-domain.com with https://new-domain.com across exported HTML files.
Date format normalization: Use regex (\d2)/(\d2)/(\d4) to replace with $3-$1-$2 and convert MM/DD/YYYY to ISO 8601 format throughout a dataset.
Code refactoring: Replace old function names, deprecated API calls, or renamed constants across a code file.
Terminology standardization: Normalize inconsistent spellings (e.g., "colour" / "color", "centre" / "center") across a multilingual document.

Browser-native JavaScript regex engine

ToolJiffy uses JavaScript's native String.prototype.replaceAll() for literal replacements and str.replace(new RegExp(pattern, flags), replacement) for regex mode. Supported flags include g (global/all occurrences), i (case-insensitive), m (multiline), and s (dotAll mode where . matches newlines). All operations run synchronously in browser memory with real-time preview as you type.

Step-by-step guide to finding and replacing text

Paste your text: Enter or paste the text containing the terms you want to replace into the editor above.
Configure search: Enter your search term (literal or regex), set flags (case-insensitive, global, multiline), and enter the replacement string.
Apply and copy: Click Replace to apply the substitution and copy the result to your clipboard.

Frequently asked questions

How does the Find and Replace Text tool work in browser memory?

ToolJiffy applies JavaScript regex substitution to find all occurrences and replace them — running 100% in browser memory with no server uploads.

Does Find and Replace support regular expressions?

Yes. Toggle 'Regex mode' to enter full JavaScript regular expressions including character classes, quantifiers, groups, and back-references.

Is my text data uploaded to any cloud server?

No. All search and replacement operations run 100% locally in your browser. Your text never leaves your device.

Can I do case-insensitive Find and Replace?

Yes. Toggle 'case-insensitive' to match all case variants (APPLE, apple, Apple) simultaneously.

Can I replace only the first occurrence or all occurrences?

Both modes are available. 'Replace first' replaces one match; 'Replace all' uses the global /g flag to substitute every occurrence.

What regex back-references can I use in the replacement string?

Use $1, $2 to reference capture groups. For example, searching (MM)/(DD)/(YYYY) and replacing with $3-$1-$2 converts date formats.

Can I find and replace across multiple lines?

Yes. Enable 'multiline' flag to make ^ and $ anchors match line starts/ends rather than only document start/end.

Is ToolJiffy Find and Replace Text free without limits?

Yes. ToolJiffy is 100% free with unlimited text processing, zero account registration, and zero server uploads.

Related text editing tools

Count word frequency with Word Frequency Counter, clean text with Text Cleaner, test regex patterns with Regex Tester, or remove duplicate lines with Remove Duplicate Lines.