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.

300 bugs solved
60 features implemented
35 interfaces improved
106 product releases since 2015
Download NuGet Purchase Compare

The journey, chapter by chapter.

106 releases are consolidated into 4 major-version chapters, covering 395 recorded improvements.

Major version chapter Latest generation

v4.0.0 - v4.1.6

WPF HTML Editor 4.0-4.1: richer editing, .NET 10, and steadier image handling

Versions 4.0.0 through 4.1.6 brought a syntax-highlighted HTML source editor, emoji and HTML signatures, and .NET 10 support. The releases also refined spell-check completion and addressed issues affecting translated interfaces, HTML content, and images.

11 features 10 bug fixes 1 interface change

Major features 11

  1. Added a modern HTML source editor with syntax highlighting and line numbers, plus HTML tag highlighting in edit mode.
  2. Added an emoji picker and support for HTML signatures.
  3. Added .NET 10 support and listed it first on NuGet.

Bugs and reliability 10

  1. Improved spell-check accuracy and setup: Reset follows the editor language, and headings, list items, and table headers no longer merge with following text or skew word counts.
  2. Addressed translated-interface problems, including clipped dialog labels and German translations not appearing when hosted through a class library.
  3. Fixed Image Properties so confirming without edits preserves image paths, dimensions, styles, and attributes.
  4. Fixed image resizing problems that could shrink or distort images when dragging handles on scaled or high-DPI displays.

Interface evolution 1

  1. Interactive spell checking now closes its review dialog on success without a completion popup; clean or empty documents open no dialog. The completion alert options were removed from the public API, so remove their assig
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.

395 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
259
2026