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Supported Formats
Convert between all major file formats with high quality
Web Formats
Joint Photographic Experts Group - the most universal image format for photographs using lossy compression. Reduces file sizes 90-95% with minimal visible quality loss. No transparency support. Perfect for photos, web images, email attachments, and any scenario requiring small file sizes. Adjustable quality levels from 1-100. Standard since 1992 with universal device and software support. Ideal for photographs and complex images with many colors.
Portable Network Graphics - lossless image format supporting transparency and 16 million colors. Larger files than JPEG but perfect quality preservation. Supports alpha channel for smooth transparency. Excellent for logos, graphics with text, screenshots, and images requiring transparency. Better compression than GIF for photos. Perfect for web graphics, UI elements, and any image needing lossless quality or transparency. Standard format for web graphics since 1996.
Web Picture format - modern image format by Google providing 25-35% smaller files than JPEG at equivalent quality. Supports both lossy and lossless compression plus transparency. Superior compression algorithms reducing bandwidth usage. Native browser support (96%+ coverage). Perfect for website optimization, web images, and reducing page load times. Combines best features of JPEG, PNG, and GIF. Recommended for modern web development.
Graphics Interchange Format - image format supporting animation and transparency with 256-color limitation. Small file sizes for simple images. Perfect for simple animations, emojis, memes, and graphics with few colors. Lossless for limited palette. Inefficient for photographs (use JPEG) or high-color graphics (use PNG). Universal support since 1987. Standard format for simple web animations and reaction images.
Scalable Vector Graphics - XML-based vector format rendering perfectly at any size. Infinitely scalable without quality loss or pixelation. Small file sizes for geometric shapes and illustrations. Editable with text editors and design software. Perfect for logos, icons, diagrams, and graphics requiring scaling. Supports animation and interactivity. Standard for responsive web graphics and resolution-independent designs. Essential format for modern web icons.
Icon File Format - specialized format for Windows icons containing multiple image sizes (16x16 to 256x256 pixels). Single file provides icons for all display resolutions. Used for favicons, application icons, and Windows shell icons. Supports transparency and multiple color depths. Perfect for website favicons, Windows program icons, and shortcut icons. Standard format for Windows icons since Windows 1.0. Essential for professional Windows applications.
AV1 Image File Format - next-generation image format based on AV1 video codec providing better compression than WebP and JPEG. 20-50% smaller files at equivalent quality. Supports HDR, wide color gamut, and transparency. Cutting-edge compression technology. Growing browser support (85%+ and increasing). Perfect for future-proof web images and maximum efficiency. Better quality at smaller sizes than any previous format. Recommended for modern websites prioritizing performance.
Bitmap Image File - uncompressed raster format from Microsoft providing pixel-perfect quality with large file sizes. No compression means huge files (1MB+ for screenshots). Fast to load and display. Simple format with universal Windows support. Perfect for temporary graphics, screen captures, and scenarios where compression artifacts are unacceptable. Legacy format largely replaced by PNG. Convert to PNG or JPEG for practical use and storage.
Tagged Image File Format - flexible format supporting multiple pages, layers, and various compression methods. Industry standard for professional photography, publishing, and archival. Supports lossless compression, 16-bit color depth, and extensive metadata. Large file sizes but excellent quality. Perfect for print publishing, photo archival, professional photography, and scenarios requiring maximum quality and flexibility. Used in medical imaging and professional scanning.
Professional Formats
Photoshop Document - Adobe Photoshop's native format preserving layers, effects, masks, and all editing capabilities. Supports 16-bit and 32-bit color depths for professional work. Large file sizes due to layer data and editing information. Perfect for ongoing design projects, professional photo editing, and collaborative design work. Not suitable for final output (export to JPEG/PNG). Essential format for professional graphic design and photo manipulation workflows. Industry standard for design files.
OpenEXR - high dynamic range image format developed by Industrial Light & Magic for visual effects and animation. Stores 16-bit or 32-bit floating-point values per channel enabling enormous dynamic range. Supports multiple layers, arbitrary channels, and lossless/lossy compression. Industry standard for VFX, CGI, and professional 3D rendering. Perfect for HDR photography, compositing, and scenarios requiring maximum color precision. Used extensively in film production and high-end visual effects.
High Dynamic Range Image - format storing luminance and color information with greater range than standard images. Captures and displays brightness levels impossible in JPEG/PNG. Uses 32-bit floating-point encoding. Perfect for realistic lighting in 3D rendering, environment maps, and HDR photography. Common in game development and architectural visualization. Enables realistic tone mapping and exposure adjustment. Essential for professional lighting workflows.
DirectDraw Surface - Microsoft texture format for games and 3D applications supporting compressed textures and mipmaps. Optimized for GPU loading with hardware-accelerated decompression. Stores multiple resolution levels (mipmaps) in single file. Standard format for game textures (DirectX, Unity, Unreal). Supports various compression algorithms (DXT1, DXT5, BC7). Perfect for game development, 3D modeling, and real-time rendering. Essential format for game asset pipelines.
Truevision TGA/Targa - raster graphics format supporting 8-32 bits per pixel with alpha channel. Uncompressed or RLE compressed for fast loading. Standard format for video editing, animation, and texture mapping. Excellent color accuracy with optional lossless compression. Perfect for video frame sequences, animation frames, and game textures. Widely supported in 3D software and video editing applications. Reliable format for professional media production.
JPEG 2000 - advanced image format using wavelet compression providing better quality than JPEG at equivalent file sizes. Supports lossless and lossy compression, progressive decoding, and ROI coding. Used in medical imaging, digital cinema, and archival. Better compression artifacts than JPEG. Slower encoding/decoding. Perfect for medical imaging, digital preservation, and applications requiring superior compression. Limited web browser support.
JPEG Stereo - stereoscopic 3D image format storing left and right eye views side-by-side or top-bottom. Based on standard JPEG with special arrangement for 3D viewing. Used for 3D photography, VR content, and stereoscopic displays. Compatible with 3D TVs and VR headsets. Perfect for 3D photography, stereoscopic content creation, and VR/AR applications. Requires special viewing equipment for proper 3D effect.
Portable Float Map - floating-point image format storing HDR color data. Simple format with 32-bit float values per channel. Used in computer graphics for HDR images and height maps. Uncompressed format with large file sizes. Perfect for HDR photography processing, displacement maps, and scientific imaging. Common in 3D rendering and simulation applications. Alternative to OpenEXR for simple HDR storage.
Flexible Image Transport System - scientific image format used primarily in astronomy. Stores astronomical images with extensive metadata headers. Supports multiple data arrays and tables. Standard format for astronomical data archives. Perfect for astronomical imaging, scientific data exchange, and research applications. Used by major observatories and space agencies worldwide. Essential format for astronomical research and data sharing.
How to Convert Files
Upload your files, select output format, and download converted files instantly. Our converter supports batch conversion and maintains high quality.
Frequently Asked Questions
What is an RGF file and how does it differ from other image formats?
An RGF file is a raw raster graphics format used by a variety of legacy systems, proprietary applications, and specialized image-processing pipelines. The term RGF does not represent a single universal standard-instead, it is used as a generic extension for “Raw Graphics Format,” meaning the file usually contains uncompressed pixel data stored in a simple, minimal, header-light or header-less structure. Because RGF varies by software origin, its internal layout depends on the tool that created it.
Unlike PNG, JPEG, TIFF, or even BMP, which have strict specifications, RGF files typically rely on external metadata to interpret width, height, channel depth, color format, and layout. This makes RGF extremely flexible for internal workflows, but unpredictable for general-purpose viewing without proper context.
How does the RGF file structure work internally?
RGF is intentionally simple and optimized for raw data storage:
Direct Pixel Dump
Most RGF files store pixel data sequentially-byte by byte-representing RGB, RGBA, grayscale, or custom channel structures.
Minimal or No Header
Some RGF variants include a tiny header with width and height; others contain no header at all, requiring manual specification.
Flexible Bit Depth
RGF may use 8-bit, 16-bit, or 32-bit float channels depending on the originating software.
No Metadata Standards
RGF includes no color profiles, gamma information, EXIF, GPS, thumbnails, DPI, orientation, or embedded metadata.
The format focuses on simplicity and speed, enabling fast parsing for technical workflows but requiring external configuration.
Where are RGF files used today?
Despite being uncommon for consumers, RGF remains relevant in specialized environments:
Scientific & Laboratory Imaging
Researchers use RGF to store sample images, microscopies, spectrograms, and raw sensor outputs.
Industrial Machine Vision
Factories and robotics systems use RGF buffers for inspection cameras and pattern recognition.
Custom Graphics Pipelines
Game engines or proprietary renderers may export raw textures as RGF for internal debugging.
Legacy Workstations
Older Unix or IRIX software used RGF-like formats for texture and framebuffer storage.
Imaging Middleware
Some SDKs use RGF internally for intermediate frames before compression to PNG or JPEG.
Scientific GPU Operations
GPGPU compute kernels often work directly on RGF-like data streams.
ML/AI Training Pipelines
Raw RGF ensures consistent pixel values without compression artifacts damaging datasets.
RGF exists primarily in technical environments requiring precision, speed, and full-control pixel manipulation.
Why do most programs fail to open RGF files?
RGF is not standardized-different tools write different layouts, so viewers cannot assume dimensions or channel order.
Without headers, the software must be told the exact width, height, bit depth, and channel count before decoding.
Some RGF files store exotic channel formats (grayscale + mask, RGB + depth, etc.) that general editors cannot understand.
How does RGF compare to RAW, RGB, RGBA, and standard image formats?
Like RAW, RGF is usually uncompressed pixel data, but RAW often follows camera or sensor-specific structures, while RGF is generic.
RGB/RGBA are subsets of RGF-RGF can store any arrangement of channels, including depth and scientific values.
PNG, TIFF, and JPEG include metadata, headers, and compression-RGF is header-light or header-less by design.
Does RGF support alpha, HDR, floating-point color, or scientific channels?
Yes-RGF can store any number of channels, including alpha, masks, depth buffers, segmentation maps, and scientific scalar data.
HDR is possible using 16-bit or 32-bit float channels, which some RGF-producing tools support.
Because RGF is not restricted by a standard, it supports whatever pixel format the generating application chooses.
Why do some RGF images appear corrupted or misaligned?
Incorrect width or height causes misaligned rows, producing diagonal tearing or distorted output.
Differences in endianness (big vs little endian) affect how multi-byte channels are interpreted.
Incorrect assumptions about channel order (RGB vs BGR, RGBA vs ARGB, etc.) cause incorrect colors or noise.
Why do color shifts occur when converting RGF to standard formats?
RGF does not include color-space or gamma information, leading to inconsistent conversions:
Gamma Guessing
Converters must assume linear or sRGB gamma-incorrect assumptions lead to brightness shifts.
Channel Mapping Issues
Custom channel arrangements may be misinterpreted when exporting to PNG or TIFF.
Float to 8-Bit Loss
Down-converting scientific float data to standard 8-bit channels causes banding.
Metadata Absence
Without ICC profiles or bit-depth metadata, applications must guess color intent.
Premultiplication Confusion
If the opacity or alpha channel is premultiplied, converters may treat it incorrectly.
Accurate conversion requires knowing the exact RGF channel layout and color space.
Can RGF files contain metadata such as EXIF or DPI?
No-RGF is a raw pixel format and stores no metadata of any kind.
Scientific workflows store metadata in separate sidecar files (JSON, XML, TXT) associated with the RGF image.
For metadata-dependent workflows, TIFF or PNG is preferred over RGF.
When should RGF be used over other formats?
RGF is ideal when exact pixel values matter more than compression or metadata:
GPU Texture Pipelines
Developers use RGF-like buffers before textures are encoded into GPU formats.
Scientific Visualization
Scientific instruments often output multi-channel RGF for precision imaging.
Machine Learning
Raw, uncompressed pixels ensure clean input data without artifacts.
Pixel-Level Algorithm Research
Computer vision prototypes use RGF to test algorithms without noise from compression.
Unix/IRIX Rendering Tools
Legacy rendering systems rely on raw formats like RGF for framebuffers.
Custom Pipeline Interchange
RGF is perfect for transferring raw image buffers between proprietary systems.
Industrial Imaging Systems
Robotics and machine inspection tools store grayscale/depth maps in RGF.
Simulation Engines
Physics and volume renderers output raw RGBO/RGBD maps as RGF.
Advanced Document Scanners
Some scanning systems produce raw channel buffers before packaging into TIFF/PDF.
Digital Preservation
RGF preserves original pixel values from legacy hardware without compression.
Why do some programs misidentify RGF files?
The .rgf extension is not standardized and may clash with other proprietary file types.
Header-less RGF files cannot be auto-detected and require user-specified parameters.
Channel counts vary (1–4+), making detection unreliable for general-purpose viewers.
How can RGF file size be reduced?
Reduce resolution-RGF scales linearly with pixel count.
Convert to PNG or TIFF for lossless compression with identical visual output.
Remove unused channels (alpha, depth, or scientific channels) to shrink size.
Why do some RGF files appear vertically flipped?
Some systems write rows bottom-to-top (OpenGL style) instead of top-to-bottom.
RGF has no orientation metadata, so viewers must guess row order.
Reversing row order during import fixes orientation inconsistencies.
Why are RGF files so large compared to standard image formats?
RGF stores raw pixel values with zero compression.
High bit depths (16-bit or 32-bit float) dramatically increase file size.
Standard formats optimize storage through metadata, compression, and subsampling-RGF does not.
Is the RGF format still relevant today?
Yes-RGF remains vital for scientific imaging, industrial systems, ML datasets, and graphics development.
Its simplicity and predictability make it ideal for pipelines that process raw pixel buffers.
While unsuitable for consumer storage, RGF will continue to be used wherever precision outweighs convenience.
About the RGF Format
RGF is a file format used in specific workflows. The exact characteristics depend on the implementation and chosen settings.
- Format Type
- File format
- Origin
- Industry-developed format
- Common Uses
- Various applications that support RGF
- Compression
- Depends on implementation
Sources and References
Format details on this page are based on the official specifications and documentation below.
- Image file type and format guide- MDN Web Docs