A single photograph passes through multiple formats in its lifetime. The camera captures RAW sensor data at 14-bit depth. The photographer develops it in Lightroom or Capture One, exporting to TIFF for retouching. The retouched file gets exported to JPEG for client delivery, WebP for web galleries, and CMYK TIFF for print. Each format exists at a specific point in this pipeline, optimized for that stage's requirements.
Using the wrong format at the wrong stage costs you either quality or storage. Editing a JPEG instead of RAW throws away 75% of your tonal data before you start. Archiving as JPEG means future re-edits work with degraded data. Uploading TIFF to your website serves 20MB files when 200KB would look identical.
This guide maps the right format to each stage: capture, develop, edit, deliver for web, deliver for print, and archive. Need a quick conversion? Convert Canon CR2 to JPG, Nikon NEF to JPG, TIFF to JPG, or JPG to WebP.
Stage 1: RAW Capture
RAW files contain minimally processed sensor data — the actual photon counts from each photosite on the camera's sensor, before the camera applies white balance, color rendering, sharpening, noise reduction, or JPEG compression.
Camera-Specific RAW Formats
Every camera manufacturer uses their own proprietary RAW format:
| Brand | Format | Extension | Typical Size (24MP) |
|---|---|---|---|
| Canon | Canon RAW | .CR2, .CR3 | 25-35 MB |
| Nikon | Nikon Electronic Format | .NEF | 25-50 MB |
| Sony | Alpha RAW | .ARW | 25-50 MB |
| Fujifilm | RAF | .RAF | 30-55 MB |
| Adobe | Digital Negative | .DNG | 20-40 MB |
DNG (Digital Negative) deserves special mention. It's Adobe's open-standard RAW format designed to solve the long-term accessibility problem of proprietary formats. Some cameras (Leica, some phones) shoot DNG natively. Others can convert to DNG via Adobe's DNG Converter. For archival, DNG is the safest RAW choice because it's an open specification, not dependent on any camera manufacturer's continued existence.
Why RAW Matters: The Numbers
A 14-bit RAW file stores 16,384 brightness levels per channel. JPEG stores 256. That's 64x more tonal information. In practical terms:
- Shadow recovery: RAW lets you brighten underexposed shadows by 2-3 stops with acceptable quality. JPEG falls apart after 1 stop — you see banding, noise, and color shifts.
- Highlight recovery: RAW captures about 1 stop more highlight data than JPEG shows. Blown-out skies in JPEG often have recoverable detail in RAW.
- White balance: RAW white balance is a metadata tag applied during development — fully adjustable after the fact with zero quality loss. JPEG bakes white balance into the pixel data permanently.
- Color depth: 14-bit x 3 channels = 4.4 trillion possible colors per pixel. 8-bit x 3 channels (JPEG) = 16.7 million. The extra depth manifests as smoother gradients and more accurate color reproduction in the final output.
Convert RAW to standard formats: CR2 to JPG | NEF to JPG | ARW to JPG | DNG to JPG | CR2 to PNG | NEF to PNG.
Stage 2: Editing and Retouching
After RAW development, professional photographers export to a high-quality intermediate format for retouching in Photoshop or similar tools.
TIFF: The Editing Standard
16-bit TIFF is the standard editing format. It preserves the extended tonal range from RAW development (65,536 levels per channel vs JPEG's 256), supports layers when saved from Photoshop, and handles both RGB and CMYK color spaces.
A typical 24MP 16-bit TIFF is 72MB uncompressed, or 30-50MB with LZW compression. This is large, but the file only exists temporarily during the editing workflow — it's not for delivery or archival.
The key reason to use 16-bit during editing: every adjustment (levels, curves, color grading) is a mathematical operation on pixel values. With 256 levels (8-bit), each adjustment can produce rounding errors that accumulate into visible banding. With 65,536 levels (16-bit), the same adjustments produce rounding errors 256x smaller — invisible in the final output even after aggressive processing.
PSD: When You Need Layers
PSD (Photoshop Document) preserves the full editing state: layers, masks, adjustment layers, smart objects, text, and blending modes. Use PSD when your editing workflow is non-destructive and you need to return to the file for future adjustments.
PSD files are larger than TIFF (a 20-layer composite at 24MP can be 200-500MB) and less portable (only Photoshop, GIMP, and Affinity Photo reliably open complex PSDs). For the final flattened output, export to TIFF or JPEG — PSD is for preserving editability, not for delivery.
Convert PSD to delivery formats: PSD to JPG | PSD to PNG | PSD to WebP.
Stage 3: Web Delivery
For web galleries, portfolios, social media, and client proofing, file size matters. A portfolio page with 20 images at 2MB each loads 40MB of data. The same 20 images at 200KB each load 4MB — 10x faster with identical visual quality on screen.
JPEG: Still the Default Web Delivery
JPEG at quality 85-92 (mozjpeg encoding) is the safest web delivery format. Every platform accepts it, every browser renders it, and the quality is excellent for photographic content. A 2400px-wide photo at quality 87 is typically 300-500KB — fast to load, beautiful on screen.
For photographers: export from Lightroom/Capture One at quality 85-92, sRGB color space, progressive encoding. This covers web galleries, client proofing, and social media uploads.
WebP and AVIF: Smaller Files, Same Quality
WebP produces photos 25-35% smaller than JPEG at the same visual quality. AVIF produces photos 50%+ smaller. For a photography portfolio, switching from JPEG to WebP saves significant bandwidth with no visible quality difference.
The practical approach: export JPEG from your editing tool (maximum compatibility with your workflow), then convert to WebP/AVIF for web serving. Keep the JPEG as your master delivery file.
Convert JPG to WebP | Convert JPG to AVIF
Stage 4: Print Delivery
Print has specific technical requirements that web delivery doesn't. Getting these wrong means your prints look different from your screen.
Print Specifications
Resolution: 300 DPI (dots per inch) is the standard for photographic prints. A 24MP camera (6000x4000 pixels) produces a native 300 DPI print at 20"x13.3". For larger prints, 240 DPI is acceptable (viewed from further away). For billboards, 72-150 DPI is fine (viewed from very far away).
Color space: Commercial print uses CMYK (cyan, magenta, yellow, black). Your camera captures RGB. The conversion from RGB to CMYK shifts some colors — vivid blues and greens are particularly affected because CMYK's gamut is smaller than RGB's. Always soft-proof CMYK conversions before sending to print.
Format: Print shops typically accept TIFF (preferred for maximum quality, supports CMYK natively), PDF (for layouts with text and images), or JPEG (quality 95+, RGB — the shop converts to CMYK). Ask your specific print provider for their requirements.
Color Profiles: sRGB, Adobe RGB, and ProPhoto RGB
sRGB: The standard for web and consumer displays. Covers approximately 35% of the visible color spectrum. If an image will be viewed on screens (web, email, social media), export as sRGB.
Adobe RGB: Covers approximately 50% of the visible spectrum. Captures more saturated greens and cyans than sRGB. Useful for print workflows where the extra gamut maps better to CMYK. Most professional photography workflows use Adobe RGB.
ProPhoto RGB: Covers approximately 90% of the visible spectrum, including colors that no current display or printer can reproduce. Used as a working space to preserve maximum data during editing. Never deliver ProPhoto RGB files to clients or web — colors will look oversaturated or washed out on sRGB displays.
Display P3: Apple's display color space, covering approximately 45% of the visible spectrum. Increasingly relevant for iPhone photography and modern Apple displays. HEIC and AVIF support P3 natively; JPEG and PNG can embed P3 ICC profiles.
Stage 5: Long-Term Archival
Archival format choices determine whether your photos are accessible in 10, 20, or 50 years. The key criteria: open specification, lossless quality, widespread decoder support, and metadata preservation.
Best archival formats, ranked:
- DNG (Digital Negative): Adobe's open RAW standard. Stores original sensor data, development settings, and metadata. The most future-proof RAW format because it's ISO-standardized and not dependent on any camera manufacturer.
- TIFF (16-bit, LZW): After you've finalized your edits, a 16-bit TIFF preserves the full tonal range in a universally-readable format. LZW compression reduces size without any quality loss. Embed the ICC color profile.
- PNG (16-bit): Similar quality to TIFF but with DEFLATE compression (slightly smaller). Less common in professional photography but equally valid for archival.
- JPEG (quality 100): Acceptable for archival if storage is constrained, but technically lossy. A quality-100 JPEG has minimal visible loss but can't be re-processed with the same latitude as 16-bit TIFF.
Always embed ICC color profiles in archival files. Without the color profile, the rendering intent is ambiguous — the same pixel values look different under sRGB vs Adobe RGB interpretation.
Complete Workflow Summary
| Stage | Format | Why |
|---|---|---|
| Capture | RAW (CR2/NEF/ARW/DNG) | Maximum sensor data, fully adjustable |
| Development | RAW → TIFF 16-bit (export) | Preserves tonal range for editing |
| Retouching | PSD or TIFF 16-bit | Non-destructive layers, wide latitude |
| Web delivery | JPEG 85-92 or WebP/AVIF | Small files, good quality, fast loading |
| Client delivery | JPEG 92-95 | Universal compatibility, excellent quality |
| TIFF (CMYK, 300 DPI) or JPEG 95+ | Print-shop requirements, color accuracy | |
| Social media | JPEG 90-92 at platform dimensions | Platform re-compresses; start high quality |
| Archival | DNG + TIFF 16-bit | Future-proof, maximum quality preserved |
Every stage of photography has a format that fits. RAW captures everything the sensor sees. TIFF preserves that data through editing. JPEG and WebP deliver it efficiently. Print demands CMYK at 300 DPI. Archival needs open, lossless formats with embedded metadata. Using the right format at each stage means you never lose quality you can't get back.
ChangeThisFile handles the conversions between stages: Canon CR2 to JPG, Nikon NEF to JPG, Sony ARW to JPG, TIFF to JPG, JPG to WebP, and JPG to AVIF. For full creative control over RAW development, use Lightroom or Capture One — then convert the output here for web delivery.