65 guides
Guides
Des explications pratiques sur les formats de fichiers, les compromis de compression et les sciences qui sous-tendent les outils.
Le contenu des guides est actuellement en anglais, le temps que les versions localisées soient préparées.
Guides des formats
Ce pour quoi chaque format de fichier est vraiment adapté, et ses limites.
- Molarity vs molality: what is the difference?5 min read
- DNA vs RNA: structure, function and the tools that read them6 min read
- PDF vs Word: ¿qué formato deberías enviar?6 min read
- HEIC vs JPG: ¿qué formato de foto conviene conservar?5 min read
- GIF vs MP4: which should you use?5 min read
- MP3 vs WAV vs M4A: audio formats compared5 min read
- Formatos de imagen explicados5 min read
- MP4 vs MOV5 min read
Notions fondamentales
Les concepts derrière les conversions : compression, conteneurs, codecs, confidentialité.
- Series vs parallel circuits: current paths, voltage and resistance5 min read
- Empirical and molecular formulas: from percentages to molecules5 min read
- Sample vs population standard deviation: which one to use5 min read
- Accuracy vs precision: what the difference means for data5 min read
- Error propagation basics: combining uncertainties5 min read
- Protección con contraseña de PDF: qué protege realmente el cifrado5 min read
- Video metadata: what is actually inside a video file?5 min read
- Contraseñas y permisos de PDF explicados6 min read
- Compresión con pérdida y sin pérdida, explicada5 min read
- ¿Es seguro subir archivos? Privacidad del navegador en herramientas de archivos6 min read
- El formato PDF explicado5 min read
- Video codecs explained5 min read
Tutoriels pas à pas
Des tutoriels courts et pratiques pour un problème de fichier précis.
- Ohm's law and circuit basics: voltage, current and power6 min read
- Projectile motion and wave basics: from trajectories to v = fλ6 min read
- Gravitation, heat and lenses: three formulas that explain everyday physics6 min read
- How to use an Ohm's law calculator: voltage, current and power5 min read
- How to use the projectile motion calculator (with worked examples)5 min read
- Voltage dividers and sensors: formula, load effects and practical use5 min read
- Simple harmonic motion: spring and pendulum periods explained5 min read
- Projectile motion with air drag: why real trajectories fall short5 min read
- RC circuits and time constants: charge, discharge and cutoff5 min read
- Moles, molar mass and molarity, with worked examples5 min read
- Balancing chemical equations: inspection, algebra and checks5 min read
- The periodic table and stoichiometry: atoms to grams6 min read
- How to calculate molar mass from a chemical formula5 min read
- Limiting reactants and percent yield: worked examples5 min read
- Molar volume and the ideal gas law: a worked guide5 min read
- Preparing solutions from a solid or a stock solution5 min read
- Partial pressures and gas mixtures: Dalton's law in practice5 min read
- Mass percent and density: converting a w/w solution to molarity5 min read
- Punnett squares, GC content and magnification basics5 min read
- DNA complements, codons and diversity basics5 min read
- Hardy-Weinberg equilibrium and population growth5 min read
- How to use a Punnett square calculator5 min read
- How to calculate GC content from a sequence5 min read
- Restriction enzyme digests: sites, cuts and fragment sizes5 min read
- Microscope field of view and magnification5 min read
- Codon usage and ORF finding: reading a CDS in six frames5 min read
- Cell doubling time and growth curves, explained5 min read
- Significant figures, scientific notation and honest reporting5 min read
- Standard deviation and linear regression without the hand-waving5 min read
- Experimental data, standard curves and honest plots5 min read
- How to plot experimental data with error bars5 min read
- Polynomial and multi-series fitting: a practical guide5 min read
- Standard errors and weighted fits: how precise is a fit?5 min read
- Markdown syntax: a practical guide for real writing6 min read
- Regular expressions: a practical starting guide6 min read
- Marcas de agua y números de página: los últimos retoques del PDF5 min read
- Volume and loudness: boosting audio without distortion5 min read
- Gestión de páginas de PDF: unir, dividir, girar, borrar5 min read
- Favicon e ICO: guía práctica5 min read
- Why your video won't play (and how to fix it)6 min read
- Cómo convertir HEIC a JPG5 min read
- Comprimir un PDF sin perder calidad5 min read
Cas d'usage concrets
Des situations réelles — formulaires, e-mail, candidatures, partage — et les outils associés.