Math & Numbers
Compute complex impedance, magnitude |Z| and phase angle φ for series or parallel RLC circuits: X_L=2πfL, X_C=1/(2πfC), |Z|=√(R²+X²), φ=atan2(X,R). Supports any subset of R/L/C and an optional linear frequency sweep.
impedance-calculatorMedia
Decode PQ or HLG AVIF, convert BT.2020 to sRGB, and tone map highlights into a viewable SDR PNG.
hdr-avif-to-sdr-pngMedia
Decode HEIC photos to compatible JPEG with quality, chroma subsampling, and background controls.
heic-to-jpgMedia
Decode HEIC photos to verified 24/32-bit or high-precision 48/64-bit PNG files.
heic-to-pngMedia
Inspect real sample depth, stored pixel depth, channels, palette, alpha, color space, ICC, and HDR metadata.
image-bit-depth-inspectorMedia
Convert images to exact monochrome, indexed, grayscale, RGB, or RGBA PNG bit depths with verified output.
image-to-bit-depth-pngMath & Numbers
Calculate the Rankine active earth pressure on a smooth vertical wall backfilled with cohesionless soil. K_a = tan²(45°−φ/2). Optional uniform surcharge q. Returns the base pressure p₀, the total force P, and the resultant height.
active-earth-pressureDevelopment
Convert a cURL command into a portable HAR 1.2 request entry.
curl-to-har-converterMedia
Clean lecture recordings with speech-focused EQ, hum reduction, peak control, and optional long-silence trimming.
audio-classroom-recording-cleanerMedia
Turn speech phrases into a repeatable practice track with a configurable pause between repetitions.
audio-language-learning-loop-makerMedia
Level a mixed meeting recording, reduce low rumble and keyboard-like clicks, and produce a meeting-ready audio file.
audio-meeting-recording-normalizerMedia
Clarify listening audio with low-frequency cleanup, speech-presence EQ, conservative denoising, and level protection.
audio-assistive-listening-enhancer