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Ratio Calibration • Client-Side Sandbox

Aspect ratio cropper

Choose the frame. Keep what matters.

Source:No image loadedTarget:—
Ratio:
0.0°
±5°
100%
200%

No image loaded

Drop a JPG, PNG or WebP to start cropping. Everything stays in your browser.

or paste an image with Ctrl / ⌘ + V

Color Profile: Display P3 (Wide Gamut)Bit Depth: 8-bit Uncompressed
Client Memory: Encrypted In-Memory Buffer

Crop Geometry & Positioning

X/Y Sync
Source Media—No image loaded
Output Frame——
Manual Pixel Coordinates

Output Configuration

Export Compression Filetype
WebP · Max quality
100% Client-Side Memory

Original uncompressed pixels never touch a cloud server. Full GPU-accelerated local canvas export.

Feed Ergonomics

Master the 4:5 Aspect Ratio

Why professional creators and high-growth brands anchor their primary grid presence to the vertical portrait standard.

  1. 01

    Command Feed Real Estate

    The 4:5 vertical proportion claims up to 33% more physical screen height on mobile displays than legacy 1:1 squares, arresting thumb scrolling in high-velocity feeds.

    +33.3% Screen Coverage
  2. 02

    Rule of Thirds Focal Balance

    The thirds overlay puts power intersections on the natural eye path, so vital subjects aren't lost when Instagram previews your post in carousels and the grid.

    Dynamic Golden Intersects
  3. 03

    Lossless Client-Side Rendering

    Export directly via the native Canvas pipeline without server degradation, compression artifacts, or metadata stripping — your pixels, your colour profile.

    Zero Server Compression Loss

How to frame with precision

  1. Lock in 4:5 for feed visibility

    Instagram portrait feed posts claim 30% more vertical space than squares, maximising engagement rates. Pick a preset or type your own ratio.

  2. Align key focal points to grid lines

    Use the rule-of-thirds overlay, zoom and straighten controls to put eyes, horizons or product edges on the intersection nodes.

  3. Export in WebP or crisp JPG

    Download at native crop resolution — or resized to Instagram's exact display size — without the harsh server re-compression artifacts.

Aspect Ratio Cropping FAQ

Instagram displays feed photos at up to 1080 × 1350 px on standard mobile screens. Uploading at double density (2160 × 2700 px) ensures ultra-crisp downsampling on Super Retina and high-PPI OLED devices without triggering Instagram's aggressive compression algorithm.