Notes: The preview version supports only Japanese and English (United States). In other languages, new features may not be available.

Please contact us for any questions or comments. Thank you for trying EmEditor preview!

preview 1 (26.0.901) – March 11, 2026

To update

If you use the installer version, please select Customize Update Checker on the Help menu, and set the Include preview versions in order to update automatically to future preview versions. Preview versions can also be downloaded at Previous versions.

New General Features

• When a file is modified externally, a delay of several milliseconds is now inserted before reloading, and the message box shown when reloading fails now allows selecting the Retry button.[PF]
• Improved the speed of various operations including Sort. [P]

New Options

• Added a The cursor moves to the correct position when sorting checkbox to the Sort page of the Customize dialog box.
• Added Provider, Model, Reasoning effort, and Text Verbosity checkboxes and drop-down list boxes, as well as a Web Search checkbox, to the AI Prompts page in the Customize dialog box. [P]
• Added Provider, Model, Reasoning effort, and Text Verbosity checkboxes and drop-down list boxes, as well as a Web Search checkbox, to the New Prompt dialog box. [P]

New Macro Features [P]

• Added the TextLength property to the Selection object.

Plug-in New Features [P]

• Added the EE_GET_SEL_LENGTH message and the Editor_GetSelLength inline function.

Bug fixes

• Fixed an issue where a response to the “Do you want to terminate the current tool job?” message box was not respected.
• Fixed a certain issue related to the WordComplete plug-in. [P]

Notes

• [P] EmEditor Professional only
• [PF] EmEditor Professional and EmEditor Free

• Fixed an issue introduced in v26.0.0 that could cause a crash when running Replace or Delete on a multi-selection containing line breaks.
• Fixed an issue introduced in v26.0.0 where certain actions—such as Find, Replace, and filtering—might not be recorded in macros.
• Fixed an issue introduced in v26.0.0 where the “File types” list in the standard Open dialog could sometimes appear incorrectly.

If you use the Desktop Installer edition, update from Help > Check for Updates. If that doesn’t work, download the latest version and run the installer. We expect the Microsoft Store release in the next few days. If you download the MSI directly, please confirm that the digital signature is signed by Emurasoft, Inc.

• Fixed a v26.0.0 regression that could crash the app when searching, replacing, or filtering very large non‑UTF‑8 files under certain conditions.
• Fixed an issue that could occur during edits involving surrogate‑pair characters.
• Fixed a v26.0.0 regression in the Batch Find/Replace list where moving multiple selected items up or down didn’t work properly.

If you use the Desktop Installer edition, update from Help > Check for Updates. If that doesn’t work, download the latest version and run the installer. We expect the Microsoft Store release in the next few days. If you download the MSI directly, please confirm that the digital signature is signed by Emurasoft, Inc.

To improve web page loading times, developers often “minify” JavaScript, CSS, and HTML by stripping out line breaks and spaces. Similarly, data formats like XML and JSON may be compressed into a single line to make them easier to process as a continuous stream, even if that hurts readability. Some types of scientific data are even more extreme—for example, genome sequences (A, T, G, C) can be stored as one uninterrupted string billions of characters long. Files like these are becoming more common, and we’ve frequently heard from users that they can slow EmEditor down. Because these files contain extraordinarily long single lines, they can significantly impact performance. In v26.0, we reviewed and optimized our internal code using multithreading and SIMD, and our tests show open/search/replace performance improvements of 2.2× to 666× compared to the previous version.

EmEditor has supported Unicode since its early days, but entering characters that are hard to type—such as uncommon kanji, foreign-language characters, or emoji—used to be awkward. You had to open Insert > Special Characters (Ctrl+Shift+I), enter a code value, insert the character, and repeat the process each time. In v26.0, we redesigned this dialog as a custom bar that can stay open while you work. It now also supports searching by Unicode name and Unicode block, displays results in a large, easy-to-read font, and can render color-capable characters (such as emoji) in color. For example, searching for “smiling” will return many smiling-face emoji.

The Character Code Value dialog (Ctrl+I) has also been updated to display characters in a large, color font, making complex characters and emoji easier to recognize.

Based on customer feedback, we expanded the Favorites feature. In addition to files, you can now register folders as favorites. Selecting a folder opens the Open File dialog so you can choose the file you want. We also improved drag-and-drop behavior: when you drag multiple files in from Explorer, EmEditor won’t add duplicates if the same file name (with no line/column specified) is already in the list.

Markdown commands for bold, italic, and code now work even when no text is selected. For example, if you run the Markdown Bold command with nothing selected and then start typing, the text you enter will be inserted as bold.

The Undo/Redo History dialog, which has long been available as a modeless window, has been converted into a custom bar. This makes it easier to keep the history visible in a convenient spot while you continue editing.

Makoto Emura enhanced his Chat with AI and Commit List plug-ins. In Chat with AI, we added a “+ File” button on the left side of the input box so you can upload a selected file to your prompt if you are using an OpenAI model. This not only makes it easier to send more content than you could by typing or pasting, but also lets you attach supported files such as HTML, PDF, and Word. This feature uses OpenAI’s file search feature. Uploading a file typically uses less tokens than pasting the entire file text to the chat. We also added the ability to search within chat history (past conversations). Note that AI features—including Chat with AI—require installing the separate ChatAI plug-in in addition to EmEditor.

In Commit List, we improved performance across multiple operations, including displaying the changes list and commit history.

We also fixed issues found during the preview build.

We hope both the Pro and Free editions meet your expectations. If you have questions, feature requests, or ideas, please contact us.

We appreciate your continued support of EmEditor.
— Yutaka Emura

For details, including major changes and screenshots, see “What’s New in Version 26.0.”

If you use the Desktop Installer edition, update from Help > Check for Updates. If that doesn’t work, download the latest version and run the installer. We expect the Microsoft Store release in the next few days. If you download the MSI directly, please confirm that the digital signature is signed by Emurasoft, Inc.

Please see New in Version 26.0 for screenshots.

Please contact us for any questions or comments. Thank you for trying EmEditor preview!

To update

If you use the installer version, please select Customize Update Checker on the Help menu, and set the Include preview versions in order to update automatically to future preview versions. Preview versions can also be downloaded at Previous versions.

preview 1 (25.9.901) – January 26, 2026

New General Features

• You can now add both folders and files to Favorites. [PF]
• The Markdown Bold/Italic/Code command now works even when no text is selected. [P]
• The Undo/Redo History dialog has been replaced with a custom bar. [PF]
• The Insert Special Character dialog has been replaced with a custom bar, with improvements including a larger, color font and filtering by Unicode name and block. [PF]
• The Character Code Value dialog has been improved with a larger font and color support. [PF]
• Improved awkward English, German, and Japanese UI text. [PF]
• Discontinued the Russian UI in v25.4. [PF]

New Options

• Added the Add Folder button to the Favorites page of the Customize dialog box. [PF]
• Added gpt-5.2 and gpt-5.2.codex to the Preferred Model drop-down list in the AI Options page of the Customize dialog box (this feature requires the Chat with AI plugin). [P]

Plug-in New Features [P]

• Added the file search feature for Chat with AI, allowing you to upload files to use in chat.
• Added the search feature for Chat with AI to search for chat messages.
• Improved the performance of the commit list in CommitList.

Bug fixes

• Fixed an issue where entering an OpenAI API key in the AI Options page of the Customize dialog could trigger an error message and prevent the key from being saved.

preview 3 (25.9.903) – February 2, 2026

• Improved the speed of various operations including Opening a large file containing no newlines (one-line file).
• Fixed partial comparision issues.

Notes

[PF] EmEditor Professional and EmEditor Free

[P] EmEditor Professional only

The EmEditor desktop installer is now also available from the Microsoft Store.
The desktop installer available on the Microsoft Store is the same program for both EmEditor Professional and EmEditor Free (you get the same app and use it according to your license/usage).

We have also improved our official website (www.emeditor.com) so you can download EmEditor with greater peace of mind.

• The EmEditor desktop installer is now available from the Microsoft Store.
• Even if you cannot use the Microsoft Store, you can still download the desktop installer safely from our official website.
• Our website has been rebuilt as a static HTML-based site, which helps reduce risks such as website tampering compared to a dynamic site.
• This website is now hosted on Cloudflare Workers, giving us tightly controlled security. Cloudflare’s role‑based access control and enterprise-grade authentication standards help ensure only authorized changes are made, so you can trust that the content you see comes from us.

We will continue to provide only official installers through our website and other authorized distribution channels.
For your safety, please download EmEditor from trusted sources such as our official website or the Microsoft Store.

Download from Microsoft Store

Other downloads

• Fixed a crash that could occur when the CommitList plugin handled a Unicode path.
• Fixed an issue affecting product registration in portable versions stored on a removable drive.
• Fixed product registration information shown in the About dialog under certain conditions.
• Updated the UI for Microsoft Store submission.

If you’re using the Desktop Installer version, go to Help → Check for Updates to download the latest version. If that doesn’t work—or if you don’t currently have EmEditor installed—please download the installer and run it.

EmEditor (desktop installer) is now also available from the Microsoft Store:

Download Desktop Installer from Microsoft Store (Recommended)

For earlier versions of Windows, you can download the installer directly here.

If you download the MSI file directly, please verify that the digital signature is signed by “Emurasoft, Inc.”:

1. Right-click the downloaded file and select Properties.
2. Open the Digital Signatures tab.
3. Confirm the signer is Emurasoft, Inc..
4. Do not install the file under any circumstances unless the signer is Emurasoft, Inc..

EmEditor’s Update Checker automatically verifies the MSI signer and cancels the update if the signer is not Emurasoft, Inc..

Alternatively, you can verify the SHA-256 hash values:

• emed64_25.4.5.msi: 0035f22bc12f565e9fe904eabccd24a608903b4d76e8bda2ec758bfcd18b12e9
• emed64_25.4.5_portable.zip: 3e2e56fd146aff6324896893265a943058cf50905acb5130d14be12464bca5ea
• chatai64_25.4.5.msi: f9601e5ec55033aa7bcd0cdcd24e92f6db24321948c15e798605e4781d170c27
• chatai64_25.4.5_portable: 7e662f206947ea29289d3d755753190073d76b3f051dd6e1210224849441d3e5
• emed_help_en_25.4.5.msi: 2ed200c42b210d4dbabb9050094f059d4de9b9c5cebb8260b5b9f35591c74990
• emed_help_ja_25.4.5.msi: 4bc21dbe4a5906c6f3a513fa0b049cf9ad953889c58b61f6018a8133a1fc3207
• emed_help_zh-cn_25.4.5.msi: 4c0854c141be7f9ddd70528303cee4d470a97eb10e40e6e3e59afe7d2d3fa12a
• emed_help_zh-tw_25.4.5.msi: 877cd8192c2b6c4c676d7a31a3953daeb4e41adc0497c4fc565d26e333e28e22

If you use the Desktop portable version, please visit the Download page to get the latest version. The Store App version can be updated through the Microsoft Store after a few days.

As part of this transition, our forums are now available in read-only mode.

Thank you for your understanding.

• Updated certain status bar items so they activate only on double-click, helping prevent accidental actions.
• Fixed an issue where status bar tooltips (Read-Only Mode and other indicators) didn’t always appear when the related switch was turned off.
• Fixed cases where Highlight Matching Tag could be unreliable in large HTML files.
• Corrected behavior when opening a file that contains a NUL (NULL) character as a text file.
• Fixed a potential crash in Replace in Files under certain conditions.
• Fixed an issue affecting a Sync feature.
• Allowed the Outline Bar to appear even when filtering is enabled.
• Fixed a potential crash when filtering with an invalid number-range syntax.
• Fixed incorrect information that could appear in the Registration Information/About dialog under certain conditions.
• Fixed behavior when selecting Copy on the AI Prompts page in the Customize dialog.
• Fixed an issue where the UI could switch to Chinese (instead of English) when the Windows display language was set to an unsupported language.

If you’re using the Desktop Installer version, go to Help → Check for Updates to download the latest version. If that doesn’t work, please download the installer (emed64_25.4.4.msi) and run it.

If you download the MSI file directly, please verify that the digital signature is signed by “Emurasoft, Inc.”:

1. Right-click the downloaded file and select Properties.
2. Open the Digital Signatures tab.
3. Confirm the signer is Emurasoft, Inc.
4. Do not install the file under any circumstances unless the signer is Emurasoft, Inc.

EmEditor’s Update Checker automatically verifies the MSI signer and cancels the update if the signer is not Emurasoft, Inc.

Alternatively, you can verify the SHA-256 hash values using the following:

• emed64_25.4.4.msi: 09e884896467b8fa574b2adf22d792e039774b8fb1300ec26a59c951937eaa3c
• chatai64_25.4.4.msi: f4db8fe290d3d5d44bd08461da24f168a73b085c6d589687f41b0a9a820556e8

If you use the Desktop portable version, please visit the Download page to get the latest version. The Store App version can be updated through the Microsoft Store after a few days.