Mr.P Toolbox
Only tools that actually work. New ones added regularly.
Currently available: A-share P&L calculators · Image tools · AI utilities
Stock tools →
Average-Down Calculator
Work out your new cost basis and break-even price after averaging down (fees included), with reverse calculation and side-by-side scenarios
Sell-All Calculator
Full breakdown of net profit after selling: commission, stamp tax and transfer fee item by item
Partial-Sell Calculator
Diluted vs break-even cost side by side — understand the cost basis your broker app shows
Break-Even Recovery Table
Down X% — how much upside to get back to even? Generates a shareable chart
Image tools →
Image Compressor
Squeeze to a target size (200KB etc.) — see exactly what you saved
Long-image Splitter
Split an overlong screenshot by height, numbered in order
Nine-grid Splitter
Center square cut into 3×3 — fills the feed in one screen
Platform Sizes
Batch-export platform presets from one image (3:4 / cover / avatar)
SVG to PNG
Vectors to hi-res bitmaps, scalable, transparent or white background
Background Remover
AI cutout to transparent PNG/WebP/AVIF — on-device, no watermark
Format Converter
png / jpg / webp / avif / bmp / ico / heic, on-device
Image Resizer
Aspect-kept resize by width / height / percent, stays sharp
Image Cropper
Free region or ratio presets (1:1 / 4:3 / 9:16), lossless
Image Collage
Stitch screenshots into a long image or grid — on-device, sortable, spaced
Photo Metadata Cleaner
Losslessly strip EXIF / GPS location & camera settings (zero JPEG loss)
Images to PDF
Merge images into one PDF, sortable, built on-device
Text Watermark
Single or tiled watermark to claim your work
Region Blur
Gaussian-blur a selected region: unreadable, outline kept
Mosaic Censor
Pixelate a region — physically irreversible, protects sensitive info
Image Pipeline
Chain fixed steps once, batch-run many images, configs saved
AI tools →
LM Studio Panel
Your browser straight to on-device LM Studio: model list, load/unload, chat test bench (streaming + speed stats) — local traffic, nothing uploaded
Local LLM Speed Calculator
Enter your machine and a model — estimates output speed in tok/s, VRAM/RAM footprint and whether it fits. Pure-math estimates
More sections are being translated — stay tuned