Find & Replace Text and Code Across Thousands of Files - In One Pass!

Bulk Replace finds and replaces text and code across many files at once. You point it at a folder (optionally including subfolders), tell it what to find and what to replace it with - using plain text, wildcards or full regular expressions - and it applies that change across every matching file in a single run. It is ideal for tasks like updating URLs across a website, refactoring strings in a codebase, applying a terminology change across documentation, or correcting the same mistake in hundreds of files at once.

There is no fixed limit. Bulk Replace is designed to handle anything from a handful of files to many thousands in a single run. It scans the folder tree you choose, processes every matching file in sequence, and shows progress as it goes. Performance depends on the number and size of your files and your PC, but sweeping a large project of several thousand text and code files typically takes seconds rather than minutes.

Yes. Every rule can be switched between plain-text mode and full regular expression mode independently. In regex mode you have capture groups, back-references, anchors, character classes, quantifiers and look-arounds available, so you can match patterns rather than fixed strings - reformatting dates, rewriting structured URLs, normalising whitespace, or extracting and rearranging parts of a match using back-references in your replacement text. Plain-text mode is there for the everyday jobs where you just want to swap one exact string for another.

No - nothing is written until you say so. Bulk Replace runs a preview pass first and shows you a before/after diff for every affected file, with each match highlighted and a total match count. You can review the results file by file and untick any individual file or match you want to leave untouched. Only when you click Replace All does it write the changes, and even then it creates a backup of every file beforehand so the whole run can be undone in one click.

Yes. Before any run writes changes to disk, Bulk Replace saves a timestamped backup of every file it is about to modify. If the result is not what you wanted, a single Undo restores every file in that job to exactly how it was. Backups are kept per run so you can roll back a specific operation even after you have done other work, giving you the confidence to make sweeping changes across thousands of files.

Yes. You can stack as many rules as you like into a single replacement set, and Bulk Replace applies them all in order during one run across your chosen files. This is perfect for migrations where many old strings map to new ones, swapping an entire colour palette in your stylesheets, or applying a long glossary of term changes. You can also import a whole rule set from a CSV file, which makes managing large lists of substitutions in a spreadsheet straightforward.

Bulk Replace works with any plain-text or code file - including .txt, .html, .css, .js, .php, .xml, .json, .csv, .md, .sql, .py, .java, .cs, .ini, .conf, .log, .srt and many more. You can filter a run to specific extensions, or include everything. It detects and skips binary files such as images, executables and archives automatically, so they are never corrupted by an accidental text replacement. You can also define your own custom extensions for any text-based format the tool does not list by default.

Yes. Bulk Replace detects each file's encoding - UTF-8, UTF-8 with BOM, ANSI, UTF-16 and others - and preserves it when writing the file back, so accented characters, currency symbols and non-Latin scripts come through a replacement intact. If you need to standardise a mixed project, you can optionally convert files to a single target encoding as part of the same run.

Yes. As well as searching and replacing inside file contents, Bulk Replace can find and replace text inside file names and folder names. That lets you rename a batch of files to a new scheme, strip an unwanted prefix or suffix, or update a version string across a whole directory - in the same run that updates the contents, or as a job on its own.

No. Bulk Replace runs entirely on your own Windows PC. Your files are read and written locally and nothing is ever uploaded, sent to a server or stored in the cloud. There is no account to create and no internet connection required to use it. This makes it well suited to confidential source code, client work and any environment where data must stay on the machine.

Yes. You can save a complete configuration - the target folder, your file filters, every rule and all the match options - as a named project. Reload it any time to re-run the same job in two clicks. This is ideal for recurring tasks such as a release-day URL sweep, a routine code clean-up, or applying the same glossary to a folder that receives new files regularly.

Yes. Every run produces a detailed log showing which files were changed, how many matches were replaced in each, which files were skipped and why, all stamped with the date and time of the job. You can export this report as a CSV file for your own records, for code review, for an audit trail, or to hand to a client or colleague as evidence of exactly what was done across the project.

Bulk Replace runs on Windows 7, 8, 10 and 11 (32-bit and 64-bit). It is a lightweight desktop application with a small download and a fast install, and it does not require any additional frameworks, runtimes or cloud services to operate. Once installed it works fully offline.

One-time payment of $19.95. You own the software outright with no monthly fees, annual renewals or per-file charges of any kind. Free software updates are included as part of your purchase for the lifetime of the product. After payment your download link is delivered instantly so you can install and start using Bulk Replace straight away.