Toolwel
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100% Client-Side • In-Memory Processing
Toolwel
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100% Client-Side • In-Memory Processing
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Resize and compress handwritten signatures to exact portal requirements (300x80 px, 140x60 px) and strict file size limits (<20 KB, <50 KB) with instant paper whitening.
Drag and drop or browse your handwritten signature snapshot. 100% private in-browser resizing.
Follow these three simple steps to pass portal validation tests without rejections:
Sign with a dark ballpoint pen or gel pen on plain white paper, take a well-lit photo, and upload it.
Select 300x80 px (<20 KB) for BD Govt / Teletalk, or 140x60 px for UPSC/SSC, and enable background whitening.
Our binary search engine converges to the optimal file size. Download and upload directly to your portal.
Most online recruitment systems (such as Bangladesh Govt Teletalk, BPSC, India UPSC, SSC, and banking portals) enforce strict programmatic validation rules: signatures must be exactly 300x80 px or 140x60 px, and the file size must strictly not exceed 20 KB (or 50 KB). Files that are even 20.1 KB or 301 px wide are rejected automatically.
Instead of guessing compression quality or degrading image resolution, our engine applies a binary search algorithm over the encoder quality range [0.05, 1.0]. In 7 logarithmic steps, it identifies the exact highest quality setting where your signature remains under your specified limit (e.g. 19.4 KB), maximizing visual ink clarity.
When you photograph a handwritten signature with your phone, the paper appears grey or yellowish with uneven shadows. Our pixel luminance threshold pass detects background pixels and converts them to pure RGB (255, 255, 255) while deepening the dark pen ink, creating a pristine, scanner-grade digital signature.
Yes. In addition to our one-click presets (300x80 px, 140x60 px, 200x100 px), you can type any custom width and height in pixels along with your required maximum KB limit.
Never. Your handwritten signature is a sensitive biometric credential. Toolwel processes all pixels locally within your browser sandbox. No image data is ever transmitted across the network or stored on any server.