readingscan.com

You can cut most images to a fraction of their original file size without any visible quality loss by doing three things in the right order: resize the image to the dimensions it will actually display at, pick the right format for the content, then apply compression at a quality level that survives a side-by-side check. The single biggest mistake is skipping step one — an oversized image compressed at maximum quality is still far heavier than a correctly sized one.

Why file size and quality are a trade-off, not a fixed setting

Every compressed image is a negotiation between three variables: how many pixels you keep, how precisely each pixel is described, and how much the format is allowed to guess.

• Dimensions decide how many pixels exist at all. Halving width and height removes 75% of the pixel data before any compression happens.
• Quality level decides how aggressively the encoder discards detail it thinks you won't notice.
• Format decides the kind of discarding allowed — some formats throw away color precision, others only remove redundancy.

Because these interact, "quality 80" means something different on a 4000px photo than on a 600px thumbnail. Tune dimensions first, then quality.

Pick the format before you touch the quality slider

Practical rule: photos → JPEG or lossy WEBP; flat graphics and transparency → PNG or lossless WEBP; anything vector → SVG.

The four levers, in the order you should pull them

1. Resize to display size (biggest win, zero quality cost)

If your layout renders an image at 800px wide, serving a 2400px original wastes roughly 89% of the pixels. Resize to the largest size it will ever be displayed at, and add a 2× version only if you need retina sharpness.

2. Choose the format

Match the format to the content type using the table above. Converting a photographic PNG to JPEG or WEBP alone can shrink it by 80% or more.

3. Set the quality level

For JPEG and lossy WEBP, most photographs hold up well between quality 70 and 85. Below ~60, banding appears in skies and blur around text. Above ~90, file size climbs steeply for gains nobody can see.

4. Strip metadata

EXIF data, camera info, and embedded thumbnails can add tens of kilobytes. Remove them unless you specifically need copyright or orientation data — and note that stripping orientation can rotate an image, so verify after export.

When lossy compression is fine, and when it isn't

Lossy is acceptable when:

• The image is a photograph or has natural texture.
• It's decorative or below the fold.
• Slight softening won't be noticed at final display size.

Use lossless or vector instead when:

• The image contains text, UI elements, or thin lines (lossy creates ringing artifacts).
• It's a logo, icon, or diagram — SVG or PNG keeps edges clean.
• It will be edited again later; repeated lossy saves compound degradation.
• It's a screenshot of code or a chart where color accuracy matters.

Compressing vs. resizing: don't confuse them

Compressing reduces the bytes needed to describe the same pixels. Resizing reduces the number of pixels. They're independent, and resizing usually delivers the larger saving. A 3000×2000 photo at quality 95 might be 2 MB; the same photo resized to 1200×800 at quality 80 might be 180 KB. Doing only the quality reduction gets you maybe 40% off; doing both gets you over 90%.

A repeatable workflow

1. Determine the maximum display width in your layout (inspect the element or check your CSS).
2. Export at that width (plus a 2× variant if needed).
3. Convert to the right format — WEBP as a modern default, JPEG as a fallback, PNG/SVG for graphics.
4. Apply quality 75–85 for lossy formats and compare against the original.
5. Strip metadata and re-check orientation.
6. Verify before publishing (see below).
7. Serve the right file with srcset so small screens don't download the large variant.

How to verify quality before you publish

• View at 100% at final display size, not zoomed in — artifacts you can't see at real size don't matter.
• Toggle between original and compressed in a viewer or an online compressor's before/after preview.
• Check the worst-case areas: skies, smooth gradients, sharp edges, and any text.
• Compare file sizes and ask whether the extra kilobytes buy visible improvement. If not, go smaller.
• Test on a mid-range phone, where banding and blur are often more obvious than on a desktop monitor.

Common mistakes

• Compressing a full-resolution image and calling it optimized.
• Using PNG for photographs.
• Setting quality to 100 "to be safe" — it inflates size with no visible benefit.
• Re-saving a JPEG repeatedly, stacking artifacts each time.
• Forgetting that GIF animations are usually better as WEBP or video.
• Ignoring metadata, which can silently add weight.

Quick reference

The order matters more than any single setting: resize, then choose format, then tune quality, then strip metadata, then verify at real display size. Follow that sequence and you'll routinely land at 10–20% of the original file size with no quality your visitors can detect.

ReadingScan's first analysis is free and requires no credit card, so you can see a preview of your report before paying anything. Full reports cost money, but the exact price is only listed on the site's pricing page — it isn't stated in the material available here. On privacy, the site says data is encrypted in transit and at rest, you can delete your data at any time, and your health data is never sold.

What you get for free

The free preview is a real analysis, not just a demo. According to the site, you upload your report, images, or both, and a few minutes later each finding comes back as a plain-English sentence with an urgency label and suggested questions for your doctor.

The sample knee MRI report shows how this is structured:

The free preview lets you judge whether the plain-English output is useful for your situation before committing to the full report. No credit card is required for that first analysis.

What costs money

The full report is the paid part. The site has a pricing page, but the amount isn't included in the material here, so check that page directly for current pricing. What the material does confirm is the boundary: first analysis free, full report paid.

If cost is the deciding factor, the practical sequence is to run the free preview first, read the plain-English findings, and then decide whether the full report adds enough to be worth paying for.

Privacy and data handling

The site makes four specific claims:

• Encrypted in transit and at rest — your upload and stored data are protected at both stages.
• Delete your data anytime — you control removal, not just at account closure.
• Never sells health data — the site states this explicitly.
• No credit card for the first analysis — you can try it without entering payment details.

These are the site's own statements. If your concern is whether a specific tool meets a legal or institutional standard (for example, a workplace or insurer requirement), verify that separately rather than relying on a general privacy claim.

What you can upload

This matters for both cost and privacy, since fewer uploads means less data shared:

• Your written report as a PDF or patient-portal screenshot — the site says this gives the most complete reading.
• Up to 5 photos from the same exam, choosing the slices your doctor pointed out.
• Report and photos together work best.
• File types: PDF, JPG, PNG, or WebP, up to 20 MB each.
• If you only have a CD, the site suggests converting DICOM to JPG for free.

Practical checklist before you upload

1. Decide what to send — the written report alone, images alone, or both. The report gives the most complete reading.
2. Run the free preview and read the plain-English findings.
3. Check the pricing page for the current full-report cost.
4. If you decide not to continue, use the delete option to remove your data.

One limit worth noting: the site states it is not medical advice and not for emergencies. Cost and privacy are separate from that — for anything urgent, contact a clinician rather than relying on a report reader.

ReadingScan is a web tool that turns a radiology report — MRI, CT, X-ray, ultrasound, or PET — into plain-English explanations of each finding. You upload your written report, up to five photos from the same exam, or both, and get back a per-finding breakdown with an urgency label and suggested questions for your doctor. It fits people who already have a report in hand and want to understand it before (or between) appointments. It is explicitly not medical advice and not for emergencies.

What you can upload

What comes back

Each finding is rewritten as a plain sentence, tagged with how urgent it is, and paired with what to ask your doctor. The site's knee MRI sample shows the shape of the output:

• Radiologist wrote: "Oblique tear of the posterior horn of the medial meniscus… approximately 8 mm."
• ReadingScan says: "Small tear in the inner knee cushion" — labeled Worth monitoring, with the note that tears like this usually come with age rather than one injury, and are usually treated with physical therapy first.
• "Grade 2 chondromalacia patellae" becomes "Early cartilage softening behind the kneecap" — Worth monitoring.
• "Small joint effusion" becomes "Small amount of fluid in the joint" — No concern, described as a normal reaction to the two findings above.

The report also answers the worry behind the question — for example, "Will I need surgery for this?" gets a "probably not" with the reasoning that physical therapy comes first, and surgery comes up if the knee locks or rehab stalls.

How the reading is structured

The sample report is laid out in two parts:

1. What did they find? — urgency label, plain-English sentence, and the detailed findings list.
2. What you were worried about — a direct answer to a common concern tied to those findings.

Reports for X-rays, CT, ultrasound, and PET are described as following the same layout.

Privacy and access

• Data is encrypted in transit and at rest.
• You can delete your data anytime.
• The site states it never sells health data.
• No credit card is required for your first analysis, and there is a free preview.
• A pricing page exists, but the amount is not stated in the material available here — check the pricing page directly for current cost.

When it's a good fit — and when it isn't

Good fit: you have a finished report and want a plain-language first pass, a sense of which findings are routine versus worth raising, and a list of questions to bring to your appointment.

Not a fit: anything urgent. The site states it is not for emergencies — if you have acute symptoms, contact a clinician or emergency services rather than uploading a report. It also does not replace your doctor's interpretation; treat the output as preparation for that conversation, not a substitute for it.

A ReadingScan report turns each finding in your radiology report into a plain-English sentence, tags it with an urgency level (for example, "Worth monitoring" or "No concern"), and adds questions you can bring to your doctor. The same layout is used for MRI, CT, X-ray, ultrasound, and PET reports. You get a free first analysis without a credit card, and the full report is a paid product — the site lists pricing at readingscan.com/pricing.

The structure of a finished report

The sample on the site is a knee MRI. It shows how each radiologist finding is unpacked:

Each entry does three things: it restates the finding in everyday words, explains what that kind of finding usually means, and tells you whether it needs attention soon or can wait.

What else is in the report

Beyond the finding-by-finding breakdown, the sample shows two more sections:

• What you were worried about. The report addresses a specific question directly. In the sample, the question is "Will I need surgery for this?" and the answer is "Probably not. For a small tear that came with age, physical therapy comes first. Surgery comes up if the knee locks or a few months of rehab leave you still limited."
• Questions for your doctor. Each finding comes with suggested questions, so you walk into the appointment with something concrete to ask rather than a vague sense of worry.

The report also notes what the scan ruled out — the site describes this as part of what each finding comes back with.

What you upload

You can send a written report, images, or both:

• The written report (PDF or a patient-portal screenshot) gives the most complete reading.
• Up to 5 photos from the same exam — pick the slices your doctor pointed out.
• Report plus photos together works best.

Accepted formats are PDF, JPG, PNG, and WebP, up to 20 MB each. If you only have a CD, the site says you can convert DICOM to JPG for free.

How to read the output

1. Start with the urgency tags. They sort the findings into what needs a conversation soon and what is a normal or expected result.
2. Read the plain-English sentence for each finding before the detailed one — it tells you what the structure is and roughly how big or advanced the change is.
3. Check the "what you were worried about" section, since it answers the question you probably typed in.
4. Bring the question list to your appointment. The report is not medical advice and is not for emergencies, so the questions are meant to start a conversation with your clinician, not replace it.

Privacy and access

The site states that data is encrypted in transit and at rest, that you can delete your data at any time, and that it never sells health data. Your first analysis does not require a credit card.

Upload your written radiology report (PDF or patient-portal screenshot) if you have it — that gives the most complete reading. If you also have images from the same exam, add up to 5 photos. ReadingScan accepts PDF, JPG, PNG, and WebP files up to 20 MB each, and the first analysis needs no credit card.

What to upload

If you're choosing which image slices to send, pick the ones your doctor pointed out.

Step-by-step

1. Get your report. Download the PDF from your patient portal, or take a screenshot of the report page. A written report is the highest-value input.
2. Prepare images (optional). If you only have a CD, convert the DICOM files to JPG for free, then select up to 5 photos from the same exam.
3. Upload. Drop your report or scan into the upload area, or browse your files. You can upload the report, the images, or both.
4. Submit and wait. Click Get My Report. A few minutes later, each finding comes back as a plain sentence, with how urgent it is and what to ask your doctor.
5. Review the output. For each finding you get a plain-English explanation, an urgency signal (for example, "Worth monitoring" or "No concern"), and suggested questions for your doctor.

File requirements

• Formats: PDF, JPG, PNG, WebP
• Size: up to 20 MB per file
• Images: up to 5 photos from the same exam
• Report types supported: MRI, CT, X-ray, ultrasound, and PET (all laid out the same way)

What you'll get back

Using the sample knee MRI on the site: the radiologist's finding "Oblique tear of the posterior horn of the medial meniscus" comes back as "Small tear in the inner knee cushion — Worth monitoring," with a plain-English explanation (an 8 mm tear, usually treated with physical therapy first) and an answer to a common worry ("Will I need surgery for this? Probably not..."). Each finding is handled the same way.

Common snags

• You only have a CD. Convert DICOM to JPG first — ReadingScan doesn't read DICOM files directly.
• Your file is over 20 MB. Compress or resize it before uploading.
• You have more than 5 images. Pick the slices your doctor pointed out; the report carries most of the detail anyway.
• You're unsure what to send. The written report alone is enough to start; adding images improves the result.

Privacy and cost notes

ReadingScan states that data is encrypted in transit and at rest, you can delete your data anytime, and it never sells health data. The first analysis requires no credit card. Pricing for the full report is listed on the site's pricing page — check there for current cost, since the free preview and the full report are separate.

ReadingScan is not medical advice and is not for emergencies. Use the output to prepare questions for your doctor, not to replace them.