Tembrica Online Tools — Page 13

Opens DXF drawings without CAD, including truncated and damaged ones, shows them and exports to SVG or a rewritten DXF.

Opens .dbf tables from dBASE, FoxPro and Clipper, repairs damaged ones, brings back deleted records and exports to CSV.

Reads OneNote sections in your browser: shows the note text, the authors and the dates, and saves everything as a plain text file.

Free percentage calculator — percent of a number, percent change, increase, decrease, discount, tip, VAT, markup. Natural-language input.

Online calculator with basic and scientific modes, voice readout in 9 languages, large accessible buttons and a paper-tape history. Free.

Convert clothing, shoe and bra sizes between US, UK, EU, IT and JP. Pick a category and size to see every region at once. Free.

Calculate the shutter speed for an ND filter. Pick your base exposure and filter strength to get the new long-exposure time. Free.

Calculate depth of field, near and far focus limits and the hyperfocal distance from focal length, aperture, distance and sensor. Free.

Work out the print size of an image from its pixels and DPI, or the DPI for a target print size, with a quality verdict. Free.

Calculate your GPA on the 4.0 scale. Add each course grade and credit hours for a credit-weighted grade point average. Free.

Compare two tire sizes: overall diameter, the percent difference and the speedometer error from a size change. Free tire size calculator.

Watch battery finder: search Casio, Seiko, Citizen, Timex by model → exact battery (CR2016, SR626SW, etc.) + full size chart. Free.

Free watch size calculator: wrist circumference → ideal case diameter, lug-to-lug and strap width, with wrist visualisation. Free, in-browser.

Ring size calculator with direct, detective and AR try-on modes. Convert US, UK, EU, JP, RU sizes. Free.

Find your watch strap size: measure the lug width in mm. Printable 1:1 lug-width gauge plus a calibrated screen ruler. Free.

Estimate the weight of set stones from their measurements: carats, grams, net metal weight. Diamond, cubic zirconia, sapphire. Online, no install.

Online spectrogram for bioacoustics: bird songs, bat echolocation, whale calls. Measure, annotate, filter, export. Free, in browser.

Free browser-based DNA/RNA analysis: reverse complement, 6-frame translation, ORF finder, restriction sites, primer checks, codon usage.

Browser-based cell counter. Auto-detect cells in microscopy images, count colonies, measure area, analyze fluorescence. Free.

Free gel electrophoresis analyzer. Auto lane & band detection, molecular weight from 20+ built-in ladders, densitometry, CSV export.

Add your signature to a PDF online: draw, type or upload it, drop it on the page, add the date and download the signed file. In your browser.

Check whether a signed PDF has been altered. Upload the PDF and its verification seal to confirm the file is unchanged. In your browser. Free.

Rearrange or remove pages of a PDF with a drag-and-drop visual editor. Preserves bookmarks and page labels. Browser-only, free.

Shrinks a PDF while keeping text, fonts and bookmarks — only the images get recompressed. Includes a fit-under-a-size mode. Runs in your browser.

Rebuilds the cross-reference table of a PDF that will not open, and salvages the text even when the document cannot be assembled. In your browser.

Convert PDF pages to JPG, PNG or WebP images. Pick DPI, page range and quality. Multi-page output as a ZIP. In the browser.

Convert .docx to PDF in the browser. A4, Letter, three quality levels, custom margins. No installation.

Remove the password from a PDF you can open. Decrypts, drops owner restrictions, lets you copy and print. No signup.

Convert JPG, PNG, WebP, AVIF or HEIC images to one PDF. Drag to reorder, rotate, set page size + margins.

Delete unwanted pages from a PDF. Click thumbnails or type a range. Blank-page sweep included. No size cap.

Convert HTML to PDF in the browser. Paste source, upload .html, or fetch a URL. A4, Letter, custom margins.

Combine multiple PDFs into one file. Reorder pages, pick page ranges per file, rotate, add bookmarks. Fast, in your browser.

Trim white borders from a PDF. Auto-detect ink, set margins in mm/in/pt, preview live. Vector output, in the browser.

Convert PDF to a .docx Word file in the browser. Heading detection, page breaks. Editable text.

Add an AES-256 password and copy/print/edit restrictions to a PDF. Real encryption that every reader from 2017+ understands.

Rotate PDF pages 90, 180 or 270 degrees per page or all at once. Preserves bookmarks and page labels. In the browser.

Pull selected pages from a PDF into a single new file. Pick by number, by range, or by clicking thumbnails. Bookmarks survive.

Split a PDF by pages, ranges, every N pages, or bookmarks. Preserves outlines and page labels.

Black out data in a PDF: type a name and cover it on every page. Redacted text is removed from the file, not hidden under a box.

Convert Russian (Cyrillic) names and text to Latin in 9 standards: passport, GOST, ICAO, BGN/PCGN. Compare, reverse, export to PDF. Free.

Automatically add stress (accent) marks to Russian text, choose the right stress for homographs, and restore the letter ё. Free, in your browser.

Look up the feminine form of any profession in 6 languages — Russian, German, French, Spanish, Portuguese, Arabic — with honest usage tags. Free.

Adaptive test: how many Russian words do you know? Estimates your vocabulary from your answers, with a guessing correction. Free.

Decline any Russian noun across all 6 cases, singular and plural. With stress marks, case questions and audio. Free, in your browser.

See how any Russian letter or word is written in connected school cursive: writing animation and a printable tracing sheet. Free, in your browser.

Yoficator automatically restores the letter «ё» in Russian text: clear words instantly, ambiguous ones your choice. Free, in your browser.

Decline a Russian surname, given name and patronymic through all 6 cases with gender rules, indeclinable-surname verdicts and patronymic forms.

Measure the straight-line distance between any two cities — air distance, bearing, midpoint and flight time, shown on a map. Free.

Offline travel phrasebook with emergency and disaster phrases in 20 languages, audio, romanization and local emergency numbers. Free, in your browser.

Track aircraft in real time on a live map and find any flight by number — with altitude, speed and aircraft type. Free, in your browser.