IMAGE CDN
& OPTIMIZER API

Resize, optimize, transform, and deliver images on-the-fly via URL parameters. WebP, AVIF, effects, text generation. Cached after the first request, and yours to purge whenever the original changes. No signup, no API keys, unlimited requests.

Optimize Any Image

                    
                        // Resize and convert to WebP

                        https://images.hsingh.app/?url=https://example.com/photo.jpg&w=800&output=webp

                        // Generate OG image with text

                        https://images.hsingh.app/?text=Hello%20World&w=1200&h=630&bg=%23FFE500

IMAGE CDN PROXY

Fetch and optimize any remote image. Resize, compress, convert formats on the fly. Cached on disk, served with ETags.

FORMAT CONVERSION

Convert to WebP, AVIF, PNG, JPEG, GIF, TIFF. Serve modern formats for faster loading.

RESIZE & CROP

Smart resizing with multiple fit modes. Cover, contain, fill, or fit inside bounds.

TEXT & OG IMAGES

Generate dynamic text images for social sharing. Multiline, shadows, gradients.

FILTERS & EFFECTS

Grayscale, sepia, blur, sharpen, brightness, contrast, saturation adjustments.

TRANSFORMS

Flip, rotate, crop, trim, focal-point and smart crops, circle and rounded masks, watermarks.

LIVE EXAMPLES

TEXT IMAGE

?text=HELLO&bg=%23FFE500

TEXT SHADOW

?txtShadow=2,2,0,%23fff

TEXT STROKE

?txtStroke=%23fff&txtStrokeWidth=2

MULTILINE

?text=MULTI%0ALINE

PARAMETERS

SOURCE & SIZE

url Remote image URL

text Text to render

w Width (px)

h Height (px)

fit cover, contain, fill

dpr Device pixel ratio

OUTPUT

output jpg, png, webp, avif, auto

q Quality (1-100)

lossless true (webp/avif)

strip false keeps EXIF/ICC

encoding base64

filename Download name

EFFECTS

grayscale true/false

sepia true/false

blur 0.3-1000

brightness Multiplier

con Contrast

TRANSFORMS

flip Vertical flip

flop Horizontal flip

ro Rotation angle

crop x,y,w,h

TEXT

txtColor Text color

fontSize Size (px)

txtShadow x,y,blur,color

txtStroke Stroke color

wrap Auto-wrap

FRAMING

a top, left, attention, entropy…

fpx / fpy Focal point (0–1)

trim Trim uniform borders

we Never enlarge

SHAPES & OVERLAYS

mask circle, ellipse, rounded

mbg Fill behind the mask

ol Watermark image URL

olw / olg Watermark size %, position

url + text Text on an image

BACKGROUND

bg Solid color

gradient linear/radial,...

roundedCorners true/false

cornerRadius Radius (px)

CACHE & PURGE

Every image is cached after the first request — check the X-Cache response header for HIT or MISS. Changed the picture behind a URL? Drop it from the cache yourself. No key, no signup.

Purge From The Cache

                    
                        // Drop every size and format of one image

                        curl -X DELETE "https://images.hsingh.app/cache?url=https://example.com/photo.jpg"

                        // Or name the transform to drop just that one variant

                        curl -X DELETE "https://images.hsingh.app/cache?url=https://example.com/photo.jpg&w=200&output=webp"

Try It — Purge An Image

Paste the original image URL — the one you passed to ?url= — not the optimized link. Limited to 20 purges an hour per IP, with a 60 second cooldown per image.

START NOW

No signup. No API keys. No limits. Just use the URL.

Try Image CDN Generate OG Image