Do patent offices require 300 or 600 DPI?

300 DPI is the practical baseline for USPTO Patent Center and most electronic filing systems; no major office requires more. 600 DPI is a safety margin for drawings with fine detail, since office-side conversion can soften thin lines.

Does upscaling change my drawing?

The AI model reconstructs cleaner, higher-resolution line edges from the original strokes; it does not add, remove, or redraw structural content. Always review the output side by side with the source before filing.

Should I export PNG or TIFF?

Use TIFF for direct office submission, since most filing systems expect flattened black-and-white TIFF. Use PNG for review copies, application drafts, and tools that do not accept TIFF.

Is my drawing used for AI training?

No. Uploaded images are processed only to produce your enhanced file and are never used to train models.

DPI Enhance

Upscale patent images with AI super-resolution. Export at 2K (300 DPI) or 4K (600 DPI) in PNG or TIFF.

Upload Image

PNG, JPEG, TIFF, or WebP — max 10 MB

Drop your image here or click to browse

Single-image enhance only

Enhance Settings

Choose output format and DPI preset for your enhanced image.

2K (300 DPI)

Minimum preset for cleaner raster export.

2048px long edge

4K (600 DPI)

Higher-detail preset for denser line work.

4096px long edge

Export preset note

2K and 4K are export presets mapped to 300 DPI and 600 DPI. Images smaller than the target are AI-upscaled first.

Each enhance costs 20 credits. Sign in to get started.

FEATURES

AI-Powered DPI Enhancement for Patent Images

High Resolution Output

Export at 300 DPI or 600 DPI to meet patent office submission requirements for clear, detailed technical drawings.

AI Super-Resolution

Enhance low-resolution patent drawings with AI upscaling to achieve the clarity needed for official filings.

PNG & TIFF Export

Export to PNG for general use or TIFF with LZW compression for patent office submissions.

Patent Office Compliance

Output settings aligned with USPTO, EPO, WIPO, JPO, and KIPO figure submission standards.

Lossless Compression

PNG and TIFF outputs use lossless compression — no quality degradation during the export process.

Filing-Ready Output

Generate figures with proper DPI metadata and clean line work, ready for direct inclusion in patent applications.

What the DPI enhancer does

Enhance upscales a low-resolution patent image with AI super-resolution, sharpening line edges instead of simply stretching pixels. Upload a PNG, JPG, or PDF figure — a scan, a screenshot, or an older export — and download a 2K (300 DPI) or 4K (600 DPI) version as PNG or TIFF. The result is sized for filing systems that reject images below their minimum resolution.

Before and after DPI enhancement

Before — blurry, low-resolution lines (under 150 DPI)

After — crisp print-quality lines (300/600 DPI)

Choosing between 300 and 600 DPI

Both presets produce black-and-white output sized for A4 or US Letter sheets. Pick based on the office and how fine your line work is:

Preset	Output	When to use it	Office guidance
300 DPI (2K)	PNG or TIFF at standard filing resolution	Default for most utility figures: flowcharts, block diagrams, simple mechanical views	Meets the USPTO Patent Center baseline; accepted by CNIPA and EPO electronic filing
600 DPI (4K)	PNG or TIFF at archival resolution	Fine hatching, dense cross-sections, small reference numerals, design patent shading	Exceeds every major office minimum; recommended where JPO and KIPO reviewers scrutinize fine line work

Enhance FAQ

From the blog

Patent figure DPI requirements explained

What 300 and 600 DPI actually mean per office, and how to avoid resolution rejections.

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What the DPI enhancer does

Preset

Output

When to use it

Office guidance

300 DPI (2K)

PNG or TIFF at standard filing resolution

Default for most utility figures: flowcharts, block diagrams, simple mechanical views

Meets the USPTO Patent Center baseline; accepted by CNIPA and EPO electronic filing

600 DPI (4K)

PNG or TIFF at archival resolution

Fine hatching, dense cross-sections, small reference numerals, design patent shading

Exceeds every major office minimum; recommended where JPO and KIPO reviewers scrutinize fine line work