Sharpen soft photos with a 3×3 convolution kernel (center 1+4f, arms −f, f = max(0.5, intensity)) — or add Gaussian/motion blur artistically. Intensity 1–10 (default 5); motion kernel caps at 15px with 0–360° angle; live 400px preview debounced 150ms; JPG/PNG/WebP output (quality default 0.92) — local processing, unlimited saves.
Runs on Canvas
Content reviewed October 2026 · About Toolzum
Shrink JPG, PNG, and WebP photos with an Image Quality slider (10–100%, default 80%) plus a Resolution Scale slider, shown in Before/After panels with exact KB and -% savings. Single-image uploads up to 50MB — local library work, unlimited saves.
Queue RAW files (CR2, NEF, ARW, DNG, RAF, ORF, RW2, PEF, SRW) — each gets a live browser decode test with a green/red dot; supported ones convert to JPG, PNG, or WebP at quality 10–100% (default 92, hidden for PNG), one by one or all at once. Canvas re-encoding drops metadata — local processing, unlimited saves.
Combine 2–9 photos into a fixed 1200×1200 collage across 5 fixed-count layouts — Grid 2×2 (exactly 4), Grid 3×3 (exactly 9), Horizontal/Vertical strips (2–9), Featured (exactly 3). Cells center-crop; spacing 0–20px, border 0–10px, radius 0–50px, PNG/JPG/WebP output (quality 0.92 default).
Grade videos with 18 filters across Color, Artistic, Blur, and Lighting (grayscale, sepia, pixelate, gaussian blur, vignette, brightness/contrast/saturation) plus a live still-frame preview. Export MP4, WebM, or GIF — local FFmpeg work, unlimited saves.
Edit SVG code with live preview — paths, fills, transforms. Tweak icons without Illustrator — local editing, unlimited saves.
Mild softness and slight misfocus sharpen well — edges tighten visibly. Heavy motion streaks and severe defocus barely improve; no tool recovers detail that was never captured.
Stop at the first sign of halos along edges or gritty noise in skies — intensity 5 of 10 is the default midpoint. The preview is a 400px downscale, so judge edges there, not fit-to-screen.
After — sharpen the final-size image once. Pre-resize sharpening wastes effort and amplifies artifacts.
No — convolution runs locally in your browser on Canvas. Saves never touch a meter — downloads on local tools are unlimited.
Image Enhancer
Grade photos with 6 one-click filter presets — Vintage, Noir, Vibrant, Cool Tone, Warm Glow — plus 6 manual sliders (brightness, contrast, saturation, blur, sepia, grayscale) rendered live through canvas filters at full source resolution. Exports JPEG at quality 0.95 as enhanced-<name>; nothing uploads.
Photo Retoucher
Retouch portrait photos with two paint-on brushes: Skin Smoothing (3×3 box blur inside a circular brush) and Red-Eye Remover (red-dominant pixels neutralized to grey). Brush runs 5–100px; the snapshot saves as JPEG 0.95 (retouched-<name>) when you lift the mouse — local Canvas pixel work, unlimited saves.
Image Colorizer
Tint any photo with an HSL color wash — hue 0–360° (default 200° blue), saturation 0–100% (default 60), brightness −40–40% (default 10) — painted in hue-blend mode over the full-resolution image. Exports JPEG at quality 0.9 as colorized_photo.jpg; nothing uploads.