# RapidRAW 1.5.2: Key Improvements in the GPU-Powered RAW Image Editor
On March 20, 2026, version 1.5.2 of the open-source RapidRAW editor was released—a cross-platform tool for processing RAW images with a focus on GPU acceleration. The app size is about 30 MB, and the codebase in Rust, React, and Tauri delivers high performance. Source code is available on GitHub under the GNU Affero GPL v3.0 license. This update overhauls viewing, rendering, and workflows, boosting responsiveness on any device—from powerful 4K PCs to laptops.
RapidRAW positions itself as a Lightroom alternative with real-time processing: exposure, contrast, shadows/highlights, white balance, HSL mixer, curves, noise reduction, sharpening. All effects render on the GPU without lag.
Overhauled Viewing and Rendering
The viewer window and rendering engine have been completely rewritten for precise preview control. Editing now works stably across displays of varying resolutions. Full-screen mode and masking feel more natural: masks adapt to changes without artifacts.
Automatic cropping kicks in during lens distortion correction, simplifying geometric adjustments. Batch negative conversion has been added—handy for scanned film.
New Tools and Improvements
The update introduces AI features and expands masking capabilities:
- Tone mapper and shader optimized for masked areas—precise local adjustments without gradient issues.
- Hotkeys refined for distraction-free quick editing.
- UI enhancements: intuitive navigation, visual cues.
- Noise reduction based on nind-denoise—AI model cuts noise without losing details.
- Analysis panel: oscillograms, polar plots for technical exposure and color breakdowns.
- Parametric masking with color/brightness controls—select areas by HSL/luminance.
- Object masking via SAM-2: one-click selection, supports complex shapes.
- Formats: JPEG XL, WebP, CUBE LUT for seamless integration with video editors.
- LRU cache for ROI rendering—instant zoom/image switching even on large RAW files.
These changes speed up workflows: caching minimizes re-renders, AI masks reduce manual work.
Workflow Integration
CUBE LUT support lets you export color grading to DaVinci Resolve or Premiere. Batch negative processing automates inversion and basic tweaks. For senior developers, the GPU shaders are noteworthy: the tone mapper now accounts for masks in compute shaders, evident in reduced latency logs.
On low-end hardware (integrated graphics), previews render 1.5x faster thanks to optimized mipmaps. Testing on 4K monitors shows no tearing in full-screen mode.
Key Highlights
- Complete rendering overhaul: stable previews on any device, LRU cache for fast zoom.
- AI tools: nind-denoise for noise, SAM-2 for one-click object masks.
- Image analysis: oscillograms and plots for precise diagnostics.
- Expanded formats: JPEG XL, WebP, CUBE LUT for cross-app workflows.
- Automations: cropping on distortion correction, batch negative conversion.
— Editorial Team
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