Our journey began 11 years ago.

Since then, we have actively maintained and developed this product, listened to customer feedback, and improved it with every release.

328 bugs solved
62 features implemented
37 interfaces improved
115 product releases since 2015
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The journey, chapter by chapter.

115 releases are consolidated into 4 major-version chapters, covering 427 recorded improvements.

Major version chapter Latest generation

v4.0.0 - v4.3.0

WPF HTML Editor 4.0-4.3: richer editing, customization, and localization

Across versions 4.0.0-4.3.0, the editor gained a modern HTML source view, emoji and signature tools, context-menu customization, a dark theme, and .NET 10 support. Updates also addressed document and image integrity, spell-check and paste behavior, WPF hosting, and localization. The spell-check API and custom-language support changed as well.

13 features 38 bug fixes 3 interface changes

Major features 13

  1. Introduced a modern HTML source editor with line numbers and syntax highlighting, and added HTML syntax highlighting in the edit view.
  2. Added an emoji picker and HTML signatures.
  3. Added customization of individual default context-menu commands and a built-in dark theme.
  4. Added .NET 10 support.

Bugs and reliability 38

  1. Fixed BodyHtml file-URL conversion and image editing problems that could rewrite paths, lose image attributes, or distort resized images.
  2. Corrected spell-check word counting around headings, list items, and table headers; paste fixes protected mail-merge fields and handled brief clipboard contention.
  3. Improved WPF integration by fixing hosted toolbar rendering and binding, and Toolbox drops that failed or stalled the XAML designer.
  4. Fixed localization issues affecting translated dialog labels, German UI hosted through a class library, and the hyperlink dialog’s Action heading.

Interface evolution 3

  1. Removed AlertComplete and CompleteAlertMessage from the spell-check API; successful checks now close without a completion popup. SpellCheckCompleted remains available.
  2. Added EditorLanguage.Custom for dedicated JSON translations, preserving existing enum values and using English resources, then the key itself, for missing translations.
Major version chapter

v3.0.25 - v3.7.7

WPF HTML Editor 3.0.25-3.7.7: modern delivery, reliable editing and localization

This chapter modernized WPF HTML Editor delivery and APIs while strengthening everyday authoring. It added modern source, spell-check, browser-emulation and color-picker capabilities, then concentrated on preserving content through paste, editing, mode changes, saving and scaled-display rendering. Localization coverage and developer documentation also expanded.

37 features 167 bug fixes 33 interface changes

Major features 37

  1. Expanded authoring with formatted HTML source, HTML5 DOCTYPE controls, a View Source context-menu command, Word/Outlook paste detection, and large-image resizing.
  2. Added zero-configuration embedded dictionaries and built-in wavy inline spell-check underlines.
  3. Added BrowserEmulation to opt into IE11 document mode for modern CSS rendering.
  4. Improved color selection with a shared HSV/RGB color-space engine and remembered quick-palette or advanced-spectrum view.

Bugs and reliability 167

  1. Protected document content and host bindings by fixing pre-ready writes, ReadOnlyPreview content handling, design/source round trips, and save-time file-loss risk.
  2. Made Word paste retain visible images and preserve styles, fonts, highlighting, table shading and nested lists.
  3. Improved editing reliability by addressing table structural corruption and crashes, unsafe cut/delete behavior, and spell-check threading and disposal failures.
  4. Corrected mixed-DPI zoom and CSS pixel sizing, and aligned displayed HTML source with DocumentHtml and BodyHtml output.

Interface evolution 33

  1. Moved to the SpiceLogic.HtmlEditor.WPF assembly and namespace, NuGet delivery, and multi-targeting from .NET Framework 4.5 through .NET 10 Windows targets.
  2. Replaced file-based activation with a static WpfHtmlEditor.LicenseKey activation model.
  3. Changed the editor base type to UserControl; toolbar instances can no longer be replaced, with customization directed to item collections and override hooks.
  4. Added a bindable WPF Language dependency property that synchronizes the spell-check language, and shipped XML API documentation for IntelliSense.
Major version chapter

v2.0 - v2.7.12

WPF HTML Editor Control 2.0-2.7.12: Editing, Pasting, and Integration Advances

Versions 2.0 through 2.7.12 expanded editor integration and authoring controls while addressing reliability issues in pasting, formatting, spell checking, URLs, and HTML handling. The releases also refined dialogs and exposed configuration and events for host applications.

7 features 47 bug fixes 1 interface change

Major features 7

  1. Made the Color Picker Dialog source available for customization, aligning it with other customizable dialogs.
  2. Added explicit UndoStack clearing through Editor.ClearUndoStack(), giving applications direct control over undo history.
  3. Improved table editing by opening Table Properties from the table toolbar button for a selected table.
  4. Expanded editor control with configurable clipboard-image handling, ReadOnly mode APIs, and an event for Style Builder OK clicks.

Bugs and reliability 47

  1. Strengthened copy-and-paste reliability by addressing memory errors, endless loops and hangs, Word-paste failures, and copy/paste failures.
  2. Corrected font and style editing problems including deleted text, unexpected font-size or spacing changes, slow property updates, and related style-change issues.
  3. Improved spell-checking reliability by fixing inline checker behavior, dictionary-path handling, duplicate user-dictionary entries, and Hunspell crashes.
  4. Resolved URL and document-handling issues involving domain-relative URLs, image paths, BaseUrl behavior, and invalid HTML charset/encoding handling.

Interface evolution 1

  1. Replaced Options.DonotShowWarningDialogAboutImagePasting with Options.PasteImageFromClipboardBehavior, supporting Base64, BaseUrl Folder, or disabled clipboard-image pasting.
Major version chapter

v1.0 - v1.8.5

WPF HTML Editor Control 1.0-1.8.5: Authoring Growth and Reliability

From its 1.0 launch through 1.8.5, WPF HTML Editor Control added integration, authoring, image, and spell-check configuration capabilities. This chapter also concentrated on dependable rich-text editing: preserving document content and formatting, improving hosting and configuration scenarios, and addressing crashes, memory leaks, and multi-instance behavior.

5 features 76 bug fixes

Major features 5

  1. Added the TemplateApplied event and support for the .NET 4.0 Client Profile.
  2. Let users add fonts and CSS font-family strings to the Fonts combo box.
  3. Added direct insertion of a local image as based64 from the image insert dialog.
  4. Added the SpellCheckOptions.NHunspellDllFolderPath setting.

Bugs and reliability 76

  1. Improved document and mode reliability by addressing script execution in WYSIWYG mode, source-mode encoding retention, DOCTYPE handling, and occasional mode-switch hangs.
  2. Improved editing fidelity across lists, tables, pasted Word content, hyperlinks, and font-style changes.
  3. Improved hosting and configuration scenarios involving inactive tabs, WinForms ElementHost, bindings, DataTemplates, and XAML-set properties.
  4. Addressed memory leaks and prevented one editor instance’s context-menu commands from affecting all active instances.

The movement, year by year.

Every column shows the bugs, features, and interface work delivered in product releases that year.

427 work items covered
43
2015
36
2016
23
2017
17
2018
8
2019
9
2020
0
2021
0
2022
0
2023
0
2024
0
2025
291
2026